Question 1: Palette 1/331

Allen MCQ

According to Whittaker, BGA are included in:

A

Mycota

B

Protista

C

Plantae

D

Monera

Question 2: Palette 2/331

Allen MCQ

Kingdom Monera comprises the :-

A

Plants of economic importance

B

All the plants studied in botany

C

Prokaryotic organisms

D

Plants of Thallophyta group

Question 3: Palette 3/331

Allen MCQ

Whittaker is famous for :-

A

Two kingdom classification

B

Four kingdom classification

C

Five kingdom classification

D

Distinguishing in Bacteria & blue green Algae

Question 4: Palette 4/331

Allen MCQ

System of classification proposed by Linnaeus was:-

A

Artificial

B

Natural

C

Sexual

D

Both (1) and (3)

Question 5: Palette 5/331

Allen MCQ

The group "Plantae" proposed by Whittaker includes:-

A

Pteridophytes

B

Gymnosperms

C

Angiosperms

D

All the above

Question 6: Palette 6/331

Allen MCQ

In Whittaker's five kingdom classification, eukaryotes were assigned to :-

A

All the five kingdom

B

Only four of the five kingdoms

C

Only three kingdom

D

Only one kingdom

Question 7: Palette 7/331

Allen MCQ

Carolus Linnaeus classified plant kingdom on the basis of :-

A

Floral morphology

B

Overall morphology of plants

C

Type of sexual reproduction

D

Anatomical character

Question 8: Palette 8/331

Allen MCQ

First plant classification was given by :-

A

Linnaeus

B

John–Ray

C

Aristotle

D

Darwin

Question 9: Palette 9/331

Allen MCQ

"Systema Naturae" book was written by :-

A

Angler and Prantle

B

Darwin

C

Linnaeus

D

Oswald - Tippo

Question 10: Palette 10/331

Allen MCQ

According to Whittaker kingdom Protista includes :-

A

Prokaryotes

B

Unicellular eukaryotes

C

Slime molds & protozoa

D

Multicellular & eukaryotes

Question 11: Palette 11/331

Allen MCQ

Infoldings of plasma membrane in bacteria are called as :-

A

Episomes

B

Plasmid

C

Pili

D

Mesosomes

Question 12: Palette 12/331

Allen MCQ

The organisms participating most actively in nitrogen cycle in nature are :-

A

Bacteria

B

Legumes

C

Parasitic algae

D

Fungi

Question 13: Palette 13/331

Allen MCQ

Heterocyst is a structure which is associated with :-

A

Reproduction

B

Respiration

C

Nitrogen fixation

D

Locomotion

Question 14: Palette 14/331

Allen MCQ

Trichodesmium erythraeum which imparts red colour to sea water of red sea is a :-

A

Cyanobacterium

B

Red Algae

C

Diatom

D

Red Coral

Question 15: Palette 15/331

Allen MCQ

Archaebacterial cell lacks :-

A

Peptidoglycan

B

DNA

C

Ribosomes

D

Branched Chain Lipids

Question 16: Palette 16/331

Allen MCQ

Most common method of reproduction in prokaryotes :-

A

Budding

B

Binary fission

C

Transduction

D

Conjugation

Question 17: Palette 17/331

Allen MCQ

Harmful activity of Blue green algae is:-

A

Denitrification

B

Water - bloom

C

Increase alkalinity of soil

D

Decrease fertility of soil

Question 18: Palette 18/331

Allen MCQ

The function of mesosome in prokaryotes is:-

A

Aerobic respiration

B

Cell wall formation

C

Both (1) and (2)

D

$N_2$ - fixation

Question 19: Palette 19/331

Allen MCQ

During rainy season ground surface become slippery due to :-

A

Fungi

B

Blue green algae

C

Bryophytes

D

Gymnosperm

Question 20: Palette 20/331

Allen MCQ

Photosynthesis of Blue green algae is:-

A

Oxygenic

B

Non oxygenic

C

Both oxygenic and non-oxygenic

D

None

Question 21: Palette 21/331

Allen MCQ

Which of the following is the only group of organisms capable of using inorganic compounds as source of energy ?

A

Fungi

B

Chemo autotrophs

C

Both the above

D

None of the above

Question 22: Palette 22/331

Allen MCQ

Link between prokaryotes and multicellular eukaryotes :–

A

Cyanobacteria

B

Protista

C

Fungi

D

Plants

Question 23: Palette 23/331

Allen MCQ

Which structure of prokaryotes is analogous to lysosome ?

A

Mesosome

B

Genophore

C

Periplasmic space

D

Perinuclear space

Question 24: Palette 24/331

Allen MCQ

Which of the following performs respiration with the help of plasma membrane ?

A

Bacteria

B

Algae

C

Fungi

D

All the above BBC024

Question 25: Palette 25/331

Allen MCQ

Richest source of bacteria is : -

A

Air

B

Soil

C

Water

D

Milk

Question 26: Palette 26/331

Allen MCQ

The most primitive monerans are :-

A

Archaebacteria

B

Eubacteria

C

Filamentous bacteria

D

Cyanobacteria

Question 27: Palette 27/331

Allen MCQ

Organisms which obtain energy by the oxidation of reduced inorganic compounds are called

A

Photo autotrophs

B

Chemo autotrophs

C

Saprozoic

D

Heterotrophs

Question 28: Palette 28/331

Allen MCQ

Which bacteria are utilized in Gobar gas plant?

A

Methanogens

B

Nitrifying bacteria

C

Ammonifying bacteria

D

Denitrifying bacteria

Question 29: Palette 29/331

Allen MCQ

Plasmid are :-

A

Virus

B

New types of micro organism

C

Extra chromosomal genetic material of bacteria

D

Essential bacterial genetic materials

Question 30: Palette 30/331

Allen MCQ

A free living aerobic bacteria capable of fixing nitrogen is :-

A

Azotobactor

B

Rhizobium

C

Clostridium botulinum

D

Streptomyces

Question 31: Palette 31/331

Allen MCQ

Which one of the following fixes $CO_2$ in to carbohydrates ?

A

Rhizobium

B

E.coli

C

Bacillus

D

Rhodospirillum

Question 32: Palette 32/331

Allen MCQ

Antibiotics are mostly obtained from :-

A

Bacteria

B

Viruses

C

Fungi

D

Angiosperm BBC

Question 33: Palette 33/331

Allen MCQ

The main difference between gram +ve and gram –ve resides in the composition of :-

A

Cilia

B

Cell-wall

C

Cell-membrane

D

Cytoplasm

Question 34: Palette 34/331

Allen MCQ

Free living nitrogen-fixing bacteria are found in-

A

Air

B

Soil

C

Root nodules

D

None of above

Question 35: Palette 35/331

Allen MCQ

Cell membrane of bacteria is made up of -

A

Cellulose and lipid

B

Chitin

C

Lipid + Protein

D

Protein and Cellulose

Question 36: Palette 36/331

Allen MCQ

Which organism is most useful for soil fertility ?

A

Bryophyta

B

Fungi

C

Bacteria

D

Bacteriophage

Question 37: Palette 37/331

Allen MCQ

Bacterial flagella are made of-

A

Carbohydrate

B

Lipid

C

Protein

D

Amide BB

Question 38: Palette 38/331

Allen MCQ

The mode of the nutrition of bacteria is usually

A

Photo autotrophic

B

Chemo autotrophic

C

Heterotrophic and autotrophic

D

None

Question 39: Palette 39/331

Allen MCQ

Fertility of soil is increased by-

A

Nitrogen - fixing bacteria

B

Denitrifying bacteria

C

Plasmalemma

D

Cell membrane

Question 40: Palette 40/331

Allen MCQ

Plant pathogenic bacteria are :-

A

Gram +ve

B

Gram –ve

C

Both (1) & (2)

D

None

Question 41: Palette 41/331

Allen MCQ

Souring of milk is due to -

A

Aerobic bacteria

B

Anaerobic bacteria

C

Both (1) & (2)

D

None BBC042

Question 42: Palette 42/331

Allen MCQ

At which place bacteria are not found :

A

Soil

B

Ice

C

Sea

D

Distilled water

Question 43: Palette 43/331

Allen MCQ

Halophile are

A

Those can live at low pH

B

Those can live at high salt concentration

C

Those can live at high pressure

D

Those can live at high light intensity

Question 44: Palette 44/331

Allen MCQ

The cyanobacteria are also referred to as?

A

Slime moulds

B

Blue green algae

C

Decomposer protist

D

Cell wall less prokaryote

Question 45: Palette 45/331

Allen MCQ

Besides paddy fields, cyanobacteria are also found inside vegetative part of:

A

Psilotum

B

Pinus

C

Cycas

D

Equisetum

Question 46: Palette 46/331

Allen MCQ

Cyanobacteria are

A

Chemosynthetic

B

Oxygenic photosynthetic

C

Anaerobic

D

Facultative anaerobic

Question 47: Palette 47/331

Allen MCQ

"Golden Algae" is the common name of Algae belonging to :-

A

Chrysophyta

B

Pyrrophyta

C

Euglenophyta

D

Cyanophyta

Question 48: Palette 48/331

Allen MCQ

Armoured cell wall and biflagellated cells are characteristic of :-

A

Chrysophyta

B

Pyrrophyta

C

Euglenophyta

D

Cyanophyta

Question 49: Palette 49/331

Allen MCQ

Oils and Leucosine are characteristic stored food in :

A

Dinoflagellates

B

Euglenoids

C

Diatoms

D

None

Question 50: Palette 50/331

Allen MCQ

Armoured algae are :

A

Dinoflagellates

B

Euglenoids

C

Red algae

D

Cyanobacteria

Question 51: Palette 51/331

Allen MCQ

The diatoms do not easily decay like most of the other Algae because:

A

They have water proof cells

B

Their walls are mucilagenous

C

They have highly siliceous wall

D

They are non-living

Question 52: Palette 52/331

Allen MCQ

‘Keiselgurh’ a heat resistant material is obtained from :-

A

Red Algae

B

Brown Algae

C

Diatoms

D

Fungi

Question 53: Palette 53/331

Allen MCQ

The diatomaceous earth is used to insulate boilers and steam pipes because:-

A

The wall of diatoms is deposited with calcium.

B

The diatomaceous earth is cheap.

C

It is a good conductor of heat.

D

The wall of diatoms is made of silica.

Question 54: Palette 54/331

Allen MCQ

Shell of diatoms is made up of :-

A

Silica

B

Calcium carbonate

C

Keratin

D

Calcium oxalate

Question 55: Palette 55/331

Allen MCQ

"Diatomite" (Keiselgurh) is obtained from:-

A

Myxophyceae

B

Chrysophyta

C

Phaeophyceae

D

Rhodophyceae

Question 56: Palette 56/331

Allen MCQ

Most characteristic feature of diatoms is :-

A

Pigments

B

Stored food

C

Cell wall

D

Non oxygenic photosynthesis

Question 57: Palette 57/331

Allen MCQ

Taxonomically the most controversial group is-

A

Dinoflagellates

B

Diatoms

C

Euglenoids

D

Prokryote

Question 58: Palette 58/331

Allen MCQ

Decomposer protists are :-

A

Diatoms

B

Dinoflagellates

C

Slime moulds

D

Euglenoid

Question 59: Palette 59/331

Allen MCQ

The dead remains of diatoms are known as:-

A

Coenobium

B

Sporangia

C

Keiselgurh

D

Sporocarp

Question 60: Palette 60/331

Allen MCQ

Taxonomists feel difficulty in classification of :-

A

Procaryotes

B

Unicellular eucaryotes

C

Plants

D

Animals

Question 61: Palette 61/331

Allen MCQ

Which of the following unicellular algae reproduce by auxospores, have silicified cell wall and store food in the form of fats, leucosine and chrysolaminarin ?

A

Diatoms

B

Red algae

C

Dinoflagellates

D

Euglenoids

Question 62: Palette 62/331

Allen MCQ

Paramylum is stored food of :-

A

Dinoflagellate

B

Euglenoid

C

Diatom

D

Slime mould

Question 63: Palette 63/331

Allen MCQ

The most efficient locomotion in protists is through :-

A

Pseudopodia

B

Flagella

C

Cilia

D

Tentacles

Question 64: Palette 64/331

Allen MCQ

Organism of which kingdom feed like animals and perform photosynthesis like plants :-

A

Monera

B

Protista

C

Mycota

D

Animalia

Question 65: Palette 65/331

Allen MCQ

"Fire algae" belongs to group :-

A

Pyrrophyta

B

Chrysophyta

C

Euglenophyta

D

Rhodophyta

Question 66: Palette 66/331

Allen MCQ

Slime mould is known as naked fungi.

A

Cell membrane absent

B

Cell wall absent

C

Cell wall and cell membrane absent

D

Never naked

Question 67: Palette 67/331

Allen MCQ

Dinoflagellates are called fire algae due to which character :-

A

They appear like fire due to pigments

B

They produce fire due to friction

C

They occur on burnt places

D

They show bioluminescence

Question 68: Palette 68/331

Allen MCQ

Toxins (Saxitoxins) secreted by some dinoflagellates enter the body of human beings through food chain and result in :-

A

Madness

B

Paralysis

C

Syphilis

D

Plague

Question 69: Palette 69/331

Allen MCQ

Stored food of Diatoms :-

A

Leucosin

B

Starch

C

Floridian starch

D

Glycogen BBC07

Question 70: Palette 70/331

Allen MCQ

Dead remains of diatoms at sea bed are called :-

A

Keiselgurh

B

Peat

C

Coral reefs

D

Sporopollenin

Question 71: Palette 71/331

Allen MCQ

Protists include :-

A

Unicellular Eukaryotes

B

Prokaryotes

C

Multicellular eukaryotes

D

Multicellular prokaryotes

Question 72: Palette 72/331

Allen MCQ

Which of the following eukaryotes are devoid of histone proteins ?

A

Golden algae

B

Euglenoids

C

Fire algae

D

Slime Mould

Question 73: Palette 73/331

Allen MCQ

Diatoms perform which type of movement in water :-

A

Swimming

B

Amoeboid

C

Floating

D

Ciliary

Question 74: Palette 74/331

Allen MCQ

Protist used for the construction of sound proof rooms, is :-

A

Dinoflagellate

B

Diatoms

C

Euglenoids

D

Zooflagellates

Question 75: Palette 75/331

Allen MCQ

Auxospores are formed by :-

A

Diatoms

B

Euglenoids

C

Dinoflagellates

D

bacteria BBC

Question 76: Palette 76/331

Allen MCQ

Protists which are diploid reproduce sexually by the process of :-

A

Zygotic meiosis

B

Cyst formation

C

Binary fission

D

Gametic meiosis

Question 77: Palette 77/331

Allen MCQ

'Red tides' are produced by :-

A

Red algae

B

Dinoflagellates

C

Diatoms

D

Brown algae

Question 78: Palette 78/331

Allen MCQ

In which of the following nuclear dimorphism is seen?

A

Entamoeba

B

Leishmania

C

Trypanosoma

D

Paramoecium

Question 79: Palette 79/331

Allen MCQ

Slipper animalcule is -

A

Entamoeba

B

Paramoecium

C

Giardia

D

Euglena

Question 80: Palette 80/331

Allen MCQ

Which group of organisms belongs to class sporozoa?

A

Plasmodium & Monocystis

B

Entamoeba & Paramoecium

C

Euglena & Trypanosoma

D

Plasmodium & Vorticella

Question 81: Palette 81/331

Allen MCQ

What is common about Trypanosoma, Noctiluca, Monocystis and Giardia ?

A

These are all parasites.

B

These are all unicellular protists.

C

They have flagella.

D

They produce spores.

Question 82: Palette 82/331

Allen MCQ

Which of the following unicellular organism has a macronucleus for trophic function and one or more micronuclei for reproduction?

A

Trypanosoma

B

Paramoecium

C

Euglena

D

Amoeba

Question 83: Palette 83/331

Allen MCQ

Fungal hyphae penetrate hard cell walls of their hosts with the help of:-

A

Enzymes

B

Hormones

C

Sharp tips

D

Sugar Exudates

Question 84: Palette 84/331

Allen MCQ

A fungus completing its life cycle on a single host is known as:-

A

Dikaryotic

B

Autoecious

C

Heterocious

D

Heterothallic

Question 85: Palette 85/331

Allen MCQ

Which of the following secretes toxins during storage conditions of crop plants ?

A

Aspergillus

B

Penicillium

C

Fusarium

D

Colletotrichum

Question 86: Palette 86/331

Allen MCQ

Which of the following characters indicate similarity between fungi and animals ?

A

Heterotrophic nutrition

B

Type of stored food

C

Presence of chitin

D

All the above

Question 87: Palette 87/331

Allen MCQ

The sac fungi belongs to :-

A

Ascomycetes

B

Basidiomycetes

C

Phycomycetes

D

Deuteromycetes

Question 88: Palette 88/331

Allen MCQ

Neurospora, which is popularly known as Drosophilla of plant kingdom, belongs to :-

A

Phycomycetes

B

Ascomycetes

C

Basidiomycetes

D

Deuteromycetes

Question 89: Palette 89/331

Allen MCQ

The basidiomycetes includes :-

A

Rusts

B

Smuts

C

Mushrooms

D

All the above

Question 90: Palette 90/331

Allen MCQ

Which of the following causes wheat rust disease?

A

A red alga

B

A green alga

C

A fungus

D

Mycoplasma

Question 91: Palette 91/331

Allen MCQ

Sexual cycle is absent in :-

A

Phycomycetes

B

Deuteromycetes

C

Ascomycetes

D

Basidiomycetes

Question 92: Palette 92/331

Allen MCQ

Penicillium fungi belong to class :-

A

Zygomycetes

B

Oomycetes

C

Deuteromycetes

D

Ascomycetes

Question 93: Palette 93/331

Allen MCQ

The fungi are :-

A

Autotrophic

B

Holotrophic

C

Chemotrophic

D

Heterotrophic

Question 94: Palette 94/331

Allen MCQ

All fungi are :-

A

With chlorophyll

B

Without chlorophyll

C

With carotene

D

Wall less

Question 95: Palette 95/331

Allen MCQ

In class phycomycetes the mycelium is :-

A

Coenocytic and aseptate.

B

Coenocytic and septate.

C

Uninucleate and aseptate.

D

Multinucleate and septate.

Question 96: Palette 96/331

Allen MCQ

Coenocytic mycelium is found in :-

A

Rhizopus

B

Mucor

C

Penicillium

D

Both (1) and (2)

Question 97: Palette 97/331

Allen MCQ

Stored food material of fungi :-

A

Cellulose

B

Starch

C

Glycogen and starch

D

Glycogen and oil

Question 98: Palette 98/331

Allen MCQ

The cell wall of Fungi is composed of:-

A

Chitin

B

Cellulose

C

Mucopeptide

D

Pseudomurein

Question 99: Palette 99/331

Allen MCQ

The chief characteristic of class ascomycetes is:

A

Formation of spores

B

Hyphae

C

Formation of ascospores

D

Formation of zoospores

Question 100: Palette 100/331

Allen MCQ

Which is commonly called ‘Drosophilla of plant kingdom’ ?

A

Morchella

B

Neurospora

C

Rhizopus

D

Claviceps

Question 101: Palette 101/331

Allen MCQ

Normally how many ascospores are formed in an ascus :-

A

4 - ascospores

B

8 - ascospores

C

16 ascospores

D

24 ascospores

Question 102: Palette 102/331

Allen MCQ

Edible part in mushrooms is :-

A

Basidiospores

B

Mycelium

C

Pseudomycelium

D

Complete basidiocarp

Question 103: Palette 103/331

Allen MCQ

Penicillin is obtained from:-

A

Chara

B

Penicillium

C

Aspergillus

D

Albugo

Question 104: Palette 104/331

Allen MCQ

Cell wall of Chitin is found in :-

A

Fungi

B

Bryophyta

C

Bacteria

D

Angiosperms

Question 105: Palette 105/331

Allen MCQ

The fungus without mycelium is :-

A

Phytophthora

B

Rhizopus

C

Saccharomyces

D

Microsporum

Question 106: Palette 106/331

Allen MCQ

Pseudomycelium occurs in :–

A

Mushroom

B

Mucor

C

Bread mould

D

Yeast

Question 107: Palette 107/331

Allen MCQ

Occurrence of dikaryotic mycelium mainly is the characteristic of :–

A

Myxomycetes

B

Phycomycetes

C

Deuteromycetes

D

Basidiomycetes

Question 108: Palette 108/331

Allen MCQ

Deuteromycetes are called 'Imperfect fungi' as:

A

They have no cell wall

B

No mycelium

C

No sexual reproduction

D

No asexual reproduction

Question 109: Palette 109/331

Allen MCQ

Absorptive mode of nutrition is found in :-

A

Algae

B

Fungi

C

Bryophytes

D

Euglenoids

Question 110: Palette 110/331

Allen MCQ

Which of the following is called 'toad stools'?

A

All mushrooms

B

Edible mushrooms

C

Poisonous mushrooms

D

None

Question 111: Palette 111/331

Allen MCQ

Yeast grows more quickly in :–

A

Salt water

B

Sugar solution

C

Double distilled water

D

Marine water

Question 112: Palette 112/331

Allen MCQ

Which of the following is a form class ?

A

Deuteromycetes

B

Basidiomycetes

C

Rhodophyceae

D

Euglenophyceae

Question 113: Palette 113/331

Allen MCQ

Ergot fungi belongs to :–

A

Ascomycetes

B

Basidiomycetes

C

Phycomycetes

D

Deuteromycetes

Question 114: Palette 114/331

Allen MCQ

Fungi are ecologically important because :-

A

They yield antibiotics

B

They are used in genetic studies

C

They function as decomposers

D

All the above

Question 115: Palette 115/331

Allen MCQ

Citric acid is obtained from :-

A

Streptomyces

B

Aspergillus

C

Penicillium

D

Albugo

Question 116: Palette 116/331

Allen MCQ

In fungi lump of hyphae is referred to as :-

A

Thallus

B

Haustorium

C

Mycelium

D

Archegonia

Question 117: Palette 117/331

Allen MCQ

Plant group which shows Heterotrophic mode of nutrition is :-

A

Algae

B

Fungi

C

Bryophytes

D

Pteridophytes

Question 118: Palette 118/331

Allen MCQ

Sexual reproduction is absent in :-

A

Phycomycetes

B

Deuteromycetes

C

Zygomycetes

D

Basidiomycetes

Question 119: Palette 119/331

Allen MCQ

Non-septate mycelium occurs in :-

A

Phycomycetes

B

Ascomycetes

C

Basidiomycetes

D

Deuteromycetes

Question 120: Palette 120/331

Allen MCQ

Basidiocarp is present in:-

A

Basidiomycetes

B

Ascomycetes

C

Deuteromycetes

D

Phycomycetes

Question 121: Palette 121/331

Allen MCQ

All fungi are:-

A

Symbionts

B

Parasites

C

Saprophytes

D

Heterotrophs

Question 122: Palette 122/331

Allen MCQ

Aspergillosis is caused by :–

A

Virus

B

Bacteria

C

Fungi

D

Mycoplasma

Question 123: Palette 123/331

Allen MCQ

Find the incorrect statements from the followings :-

A

Growth, reproduction and consciousness are unique features of living organisms.

B

Growth and reproduction are defining characteristics of living organisms.

C

Metabolism, cellular organisation and consciousness are defining characters of livings.

D

Living organisms are self replicating, evolving and self regulating.

Question 124: Palette 124/331

Allen MCQ

Which is a group of organisms in which reproduction is synonymous with growth :-

A

Amoeba, bacteria and unicellular algae

B

Algae, fungi and lichen

C

Lower organisms

D

Higher multicellular organisms

Question 125: Palette 125/331

Allen MCQ

Why viruses did not find a place in classification?

A

They are obligate parasites, cannot survive without host.

B

Viruses are unicellular organisms so can not be included in livings.

C

They are not truly living because they don't have cell structure.

D

They can pass through the bacteria proof filter

Question 126: Palette 126/331

Allen MCQ

Which of the followings is/are symbiotic associations between autotrophic and heterotrophic organisms only
(A) Mycorrhiza between fungi and roots of higher plants
(B) Lichen between phycobiont and mycobiont.
(C) Coralloid roots of Cycas having cyanobacteria.
(D) Obligate association between Pinus roots and fungi making mycorrhizae.

A

A & B

B

B & C

C

A, B & C

D

A, B & D

Question 127: Palette 127/331

Allen MCQ

Bacteriophages are made of both proteins and genetic material. Their genetic material is generally-

A

ss DNA

B

ds DNA

C

ss RNA

D

ds RNA

Question 128: Palette 128/331

Allen MCQ

Find the correct from the followings.

A

T.O. Diener discovered a new infectious agent, smaller than virus and named them as prions.

B

Viroids lack the protein coat and made of only free RNA.

C

The RNA of viroids is of high molecular weight.

D

Lichens are very good pollution indicators as they grow only in polluted areas.

Question 129: Palette 129/331

Allen Match the Columns

Match the Column-I with Column-II and find out the correct as shown ?

Column-I	Column-II
(a) Pollution indicator (b) Mycobiont (c) Potato spindle (d) Obligate parasite	(P) Fungal (Q) Viroid component (R) Lichen tuber disease (S) Virus

A

a - r, b - p, c - s, d - q

B

a - r, b - s, c - p, d - q

C

a - s, b - r, c - p, d - q

D

a - r, b - p, c - q, d - s

Question 130: Palette 130/331

Allen MCQ

In lichen fungal component is responsible to provide?

A

Shelter to phycobiont

B

Mineral absorption

C

Water absorption

D

All of the above

Question 131: Palette 131/331

Allen MCQ

The protein coat of viruses is called :-

A

Capsomeres

B

Capsid

C

Sheath

D

Envelope

Question 132: Palette 132/331

Allen MCQ

Lichens are :-

A

Symbiotic association between algae and fungi

B

Pollution indicators

C

Not placed in any kingdom by R.H. Whittaker

D

All of these are correct BBC142

Question 133: Palette 133/331

Allen MCQ

Phycobiont is a :

A

algal, autotrophic component of mycorrhiza

B

fungal, heterotrophic component of lichen

C

fungal component of mycorrhiza

D

algal, autotrophic component of lichen

Question 134: Palette 134/331

Allen MCQ

Identify the a & b figure and their P and Q part.

A

a - Tobacco Mosaic virus, b - Bacteriophage P → RNA, Q →Head

B

a - Bacteriophage,b - Tobacco Mosaic virus P → RNA, Q → Head

C

a - Potato Mosaic virus, b - Cyanophage P → Head, Q → RNA

D

a - Smallpox virus, b - Influenza virus P → RNA, Q → Head

Question 135: Palette 135/331

Allen MCQ

Choose the incorrect pair :-

A

Virus – Nucleocapsid

B

Viroids – Only RNA

C

Lichen – Algae and fungi

D

Mycorrhiza – BGA and higher plants

Question 136: Palette 136/331

Allen MCQ

Which of the given organism(s) belong to kingdom protista according to five kingdom system?
(A) Virus (B) Euglena (C) Viroids (D) Lichen

A

A and B

B

C and D

C

Only B

D

A and C

Question 137: Palette 137/331

Allen MCQ

The transfer of genetic material from one bacterium to other bacterium from virus, is called:-

A

Conjugation

B

Transduction

C

Transformation

D

Crossing over

Question 138: Palette 138/331

Allen MCQ

Read the following statements :
(i) Mycorrhiza is the symbiotic association between roots of higher plants and fungus.
(ii) Lichens are biological indicator for water pollution.
(iii) Viroids contain only low molecular weight DNA and protein.
(iv) W.M. Stanley crystallised TMV Which of the above statements are correct:

A

(i), (ii) and (iv)

B

(i) and (iv)

C

(ii) and (iii)

D

(i) and (ii)

Question 139: Palette 139/331

Allen MCQ

Which of the following benefit is not provided by fungi to symbiotic plant ?

A

Protection from pathogen

B

Availability of water

C

Availability of phosphate

D

Ability to fix nitrogen

Question 140: Palette 140/331

Allen MCQ

Five kingdom system of classification suggested by R.H. Whittaker is not based on

A

Presence or absence of a well defined nucleus.

B

Mode of reproduction.

C

Mode of nutrition.

D

Complexity of body organisation.

Question 141: Palette 141/331

Allen MCQ

Archaebacteria differ from eubacteria in :

A

Cell membrane

B

Mode of nutrition

C

Cell shape

D

Mode of reproduction

Question 142: Palette 142/331

Allen MCQ

Anoxygenic photosynthesis is characteristic of :

A

Rhodospirillum

B

Spirogyra

C

Chlamydomonas

D

Ulva

Question 143: Palette 143/331

Allen MCQ

Which of the following shows coiled RNA strand and capsomeres?

A

Polio virus

B

Tobacco masaic virus

C

Measles virus

D

Retrovirus

Question 144: Palette 144/331

Allen MCQ

Transformation was discovered by :-

A

Meselson and Stahl

B

Hershey and Chase

C

Griffith

D

Watson and Crick

Question 145: Palette 145/331

Allen MCQ

Viruses have :-

A

DNA enclosed in a protein coat

B

Prokaryotic nucleus

C

Single chromosome

D

Both DNA and RNA

Question 146: Palette 146/331

Allen MCQ

Which one of the following living organisms completely lacks a cell wall?

A

Cyanobacteria

B

Sea–fan (Gorgonia)

C

Saccharomyces

D

Blue–green algae

Question 147: Palette 147/331

Allen MCQ

Which one of the following matches is correct ?

A

Alternaria — Sexual reproduction absent — Deuteromycetes

B

Mucor — Reproduction by Conjugation — Ascomycetes

C

Agaricus — Parasitic fungus — Basidiomycetes

D

Phytophthora — Aseptate mycelium — Basidiomycetes

Question 148: Palette 148/331

Allen MCQ

True nucleus is absent in :-

A

Mucor

B

Vaucheria

C

Volvox

D

Anabaena

Question 149: Palette 149/331

Allen MCQ

Which one of the following is not an inclusion body found in prokaryotes ?

A

Cyanophycean granule

B

Glycogen granule

C

Polysome

D

Phosphate granule BBC212

Question 150: Palette 150/331

Allen MCQ

The guts of cow and buffalo possess:

A

Chlorella spp.

B

Methanogens

C

Cyanobacteria

D

Fucus spp.

Question 151: Palette 151/331

Allen MCQ

Which of the following structures is not found in prokaryotic cells?

A

Plasma membrane

B

Nuclear envelope

C

Ribosome

D

Mesosome

Question 152: Palette 152/331

Allen MCQ

Choose the wrong statement :

A

Yeast is unicellular and useful in fermentation.

B

Penicillium is multicellular and produces antibiotics.

C

Neurospora is used in the study of biochemical genetics.

D

Morels and truffles are poisonous mushrooms.

Question 153: Palette 153/331

Allen MCQ

Which of the following are not membranebound?

A

Mesosomes

B

Vacuoles

C

Ribosomes

D

Lysosomes

Question 154: Palette 154/331

Allen MCQ

Cell wall is absent in :

A

Nostoc

B

Aspergillus

C

Funaria

D

Mycoplasma

Question 155: Palette 155/331

Allen MCQ

In which group of organisms the cells walls form two thin overlapping shells which fit together ?

A

Slime moulds

B

Chrysophytes

C

Euglenoids

D

Dinoflagellates

Question 156: Palette 156/331

Allen MCQ

Chromatophores take part in :

A

Respiration

B

Photosynthesis

C

Growth

D

Movement

Question 157: Palette 157/331

Allen MCQ

The structures that help some bacteria to attach to rocks and/or host tissues are :

A

Holdfast

B

Rhizoids

C

Fimbriae

D

Mesosomes

Question 158: Palette 158/331

Allen MCQ

The imperfect fungi which are decomposers of litter and help in mineral cycling belong to:

A

Ascomycetes

B

Deuteromycetes

C

Basidiomycetes

D

Phycomycetes

Question 159: Palette 159/331

Allen MCQ

Pick up the wrong statement :

A

Nuclear membrane is present in Monera

B

Cell wall is absent in Animalia.

C

Protista have photosynthetic and heterotrophic modes of nutrition.

D

Some fungi are edible.

Question 160: Palette 160/331

Allen MCQ

Which one of the following statements is wrong ?

A

Cyanobacteria are also called bluegreen algae.

B

Golden algae are also called desmids.

C

Eubacteria are also called false bacteria.

D

Phycomycetes are also called algal fungi

Question 161: Palette 161/331

Allen MCQ

Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom:-

A

Monera

B

Protista

C

Fungi

D

Animalia

Question 162: Palette 162/331

Allen MCQ

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the :-

A

Halophiles

B

Thermoacidophiles

C

Methanogens

D

Eubacteria

Question 163: Palette 163/331

Allen MCQ

Methanogens belong to :

A

Dinoflagellates

B

Slime moulds

C

Eubacteria

D

Archaebacteria

Question 164: Palette 164/331

Allen MCQ

Select the wrong statement :-

A

Diatoms are chief producers in the oceans.

B

Diatoms are microscopic and float passively in water.

C

The walls of diatoms are easily destructible.

D

'Diatomaceous earth' is formed by the cell walls of diatoms.

Question 165: Palette 165/331

Allen MCQ

Select the mismatch :-

A

Protists-Eukaryotes

B

Methanogens-Prokaryotes

C

Gas vacuoles-Green bacteria

D

Large central vacuoles - Animal cells

Question 166: Palette 166/331

Allen MCQ

Select the wrong statement :-

A

Cyanobacteria lack flagellated cells.

B

Mycoplasma is a wall-less microorganism

C

Bacterial cell wall is made up of peptidoglycan.

D

Pilli and fimbriae are mainly involved in motility of bacterial cells

Question 167: Palette 167/331

Allen MCQ

Which of the following sets of diseases is caused by bacteria?

A

Tetanus and mumps

B

Herpes and influenza

C

Cholera and tetanus

D

Typhoid and smallpox

Question 168: Palette 168/331

Allen MCQ

Which of the following are found in extreme saline conditions ?

A

Eubacteria

B

Cyanobacteria

C

Mycobacteria

D

Archaebacteria

Question 169: Palette 169/331

Allen MCQ

Select the mismatch :-

A

Rhodospirillum — Mycorrhiza

B

Anabaena — Nitrogen fixer

C

Rhizobium — Alfalfa

D

Frankia — Alnus

Question 170: Palette 170/331

Allen MCQ

Which of the following components provides sticky character to the bacterial cell ?

A

Nuclear membrane

B

Plasma membrane

C

Glycocalyx

D

Cell wall

Question 171: Palette 171/331

Allen MCQ

Viroids differ from viruses in having :-

A

DNA molecules without protein coat

B

RNA molecules with protein coat

C

RNA molecules without protein coat

D

DNA molecules with protein coat

Question 172: Palette 172/331

Allen MCQ

Which of the following is correctly matched for the product produced by them ?

A

Methanobacterium : Lactic acid

B

Penicillium notatum : Acetic acid

C

Saccharomyces cerevisiae : Ethanol

D

Acetobacter aceti : Antibiotics

Question 173: Palette 173/331

Allen MCQ

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen ?

A

Pseudomonas

B

Mycoplasma

C

Nostoc

D

Bacillus

Question 174: Palette 174/331

Allen MCQ

Which among the following is not a prokaryote?

A

Saccharomyces

B

Mycobacterium

C

Nostoc

D

Oscillatoria

Question 175: Palette 175/331

Allen MCQ

Select the wrong statement:

A

Cell wall is present in members of fungi and plantae

B

Mushrooms belong to basidiomycetes

C

Pseudopodia are locomotory and feeding structures in sporozoans

D

Mitochondria are the powerhouse of the cell in all kingdoms except Monera

Question 176: Palette 176/331

Allen MCQ

After karyogamy followed by meiosis, spores are produced exogenously in:

A

Neurospora

B

Alternaria

C

Agaricus

D

Saccharomyces

Question 177: Palette 177/331

Allen MCQ

Which of the following organisms are known as chief producers in the oceans ?

A

Dinoflagellates

B

Diatoms

C

Cyanobacteria

D

Euglenoids

Question 178: Palette 178/331

Allen MCQ

Which of the following statements is incorrect?

A

Morels and truffles are edible delicacies.

B

Claviceps is a source of many alkaloids and LSD.

C

Conidia are produced exogenously and ascospores endogenously.

D

Yeasts have filamentous bodies with long thread-like hyphae.

Question 179: Palette 179/331

Allen MCQ

Which of the following statements is incorrect?

A

Viroids lack a protein coat.

B

Viruses are obligate parasites.

C

Infective constituent in viruses is the protein coat.

D

Prions consist of abnormally folded proteins.

Question 180: Palette 180/331

Allen MCQ

Thiobacillus is a group of bacteria helpful in carrying out:

A

Nitrogen fixation

B

Chemoautotrophic fixation

C

Nitrification

D

Denitrification

Question 181: Palette 181/331

Allen Match the Columns

Match Column-I with Column-II.

Column-I	Column-II
(a) Saprophyte (b) Parasite (c) Lichens (d) Mycorrhiza	(i) Symbiotic association of fungi with plant roots (ii) Decomposition of dead organic materials (iii) Living on living plants or animals (iv) Symbiotic association of algae and fungi

A

a-i, b-ii, c-iii, d-iv

B

a-iii, b-ii, c-i, d-iv

C

a-ii, b-i, c-iii, d-iv

D

a-ii, b-iii, c-iv, d-i

Question 182: Palette 182/331

Allen Match the Columns

Match the organisms in column-I with habitats in column-II.

Column-I	Column-II
(a) Halophiles (b) Thermoacidophiles (c) Methanogens (d) Cyanobacteria	(i) Hot springs (ii) Aquatic environment (iii) Guts of ruminants (iv) Salty area

A

(a)-(iv),(b)-(i), (c)-(iii), (d)-(ii)

B

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

C

(a)-(iii),(b)-(iv), (c)-(ii), (d)-(i)

D

(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

Question 183: Palette 183/331

Allen MCQ

Mad cow disease in cattle is caused by an organism which has :-

A

inert crystalline structure

B

abnormally folded protein

C

free RNA without protein coat

D

free DNA without protein coat

Question 184: Palette 184/331

Allen MCQ

Which of the following statements is correct ?

A

Lichens do not grow in polluted areas.

B

Algal component of lichens is called mycobiont.

C

Fungal component of lichens is called phycobiont

D

Lichens are not good pollution indicators.

Question 185: Palette 185/331

Allen MCQ

Which of the following bacteria reduce nitrate in soil into nitrogen ?

A

Nitrobacter

B

Nitrococcus

C

Thiobacillus

D

Nitrosomonas

Question 186: Palette 186/331

Allen MCQ

Among the following pairs of microbes, which pair has both the microbes that can be used as biofertilizers?

A

Aspergillus and Rhizopus

B

Rhizobium and Rhizopus

C

Cyanobacteria and Rhizobium

D

Aspergillus and Cyanobacteria

Question 187: Palette 187/331

Allen MCQ

Which of the following statements about methanogens is not correct?

A

They can be used to produce biogas.

B

They are found in the rumen of cattle and their excreta.

C

They grow aerobically and breakdown cellulose-rich food.

D

They produce methane gas.

Question 188: Palette 188/331

Allen MCQ

Which of the following is correct about viroids?

A

They have free DNA without protein coat.

B

They have RNA with protein coat.

C

They have free RNA without protein coat.

D

They have DNA with protein coat.

Question 189: Palette 189/331

Allen MCQ

Which of the following statements about inclusion bodies is incorrect ?

A

These represent reserve material in cytoplasm.

B

They are not bound by any membrane.

C

These are involved in ingestion of food particles.

D

They lie free in the cytoplasm.

Question 190: Palette 190/331

Allen MCQ

Inclusion bodies of blue- green, purple and green photosynthetic bacteria are :-

A

Contractile vacuoles

B

Gas vacuoles

C

Centrioles

D

Microtubules

Question 191: Palette 191/331

Allen MCQ

Which of the following is incorrect about Cyanobacteria ?

A

They are photoautotrophs.

B

They lack heterocyst.

C

They often form blooms in polluted water bodies.

D

They have chlorophyll A similar to green plants.

Question 192: Palette 192/331

Allen MCQ

Which of the following statements is correct?

A

Fusion of two cells is called Karyogamy.

B

Fusion of protoplasm between two motile on non-motile gametes is called plasmogamy.

C

Organisms that depend on living plants are called saprophytes.

D

Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells.

Question 193: Palette 193/331

Allen MCQ

Statement-I: Mycoplasma can pass through less than 1 micron filter size. Statement-II : Mycoplasma are bacteria with cell wall. In the light of the above statements, choose the most appropriate answer from the options given below:

A

Both Statement-I and II are incorrect.

B

Statement-I is correct but Statement-II is incorrect.

C

Statement-I is incorrect but Statement-II is correct.

D

Both Statement-I and II are correct.

Question 194: Palette 194/331

Allen MCQ

Which of the following is a correct statement?

A

Bacteria are exclusively heterotrophic organisms.

B

Slime moulds are saprophytic organisms classified under Kingdom Monera.

C

Mycoplasma have DNA, Ribosome and cell wall.

D

Cyanobacteria are a group of autotrophic organisms classified under Kingdom Monera.

Question 195: Palette 195/331

Allen MCQ

Mad cow disease in cattle and Cr Jacob disease in humans are due to infection by______

A

Bacterium

B

Virus

C

Viroid

D

Prion

Question 196: Palette 196/331

Allen Match the Columns

Match Column-I with Column-II.

Column-I	Column-II
(a) Ringworm (b) Filariasis (c) Malaria (d) Pneumonia	(i) Haemophilus influenzae (ii) Trichophyton (iii) Wuchereria bancrofti (iv) Plasmodium vivax

A

a-ii, b-iii, c-i, d-iv

B

a-iii, b-ii, c-i, d-iv

C

a-iii, b-ii, c-iv, d-i

D

a-ii, b-iii, c-iv, d-i

Question 197: Palette 197/331

Allen MCQ

Statement-I : RNA mutates at a faster rate. Statement-II : Viruses having RNA genome and shorter life span mutate and evolve faster. In the light of the above statements, choose the correct answer from the options given below :-

A

Both Statement-I and Statement-II are false.

B

Statement I is true but Statement II is false.

C

Statement I false but Statement II is true.

D

Both Statement I and Statement II are true. BBC391

Question 198: Palette 198/331

Allen MCQ

Which one of the following is not a criterion for classification of fungi?

A

Morphology of mycelium

B

Mode of nutrition

C

Mode of spore formation

D

Fruiting body

Question 199: Palette 199/331

Allen Match the Columns

Match Column-I with Column-II.

Column-I	Column-II
(a) Rhizopus (b) Ustilago (c) Puccinia (d) Agaricus	(i) Mushroom (ii) Smut fungus (iii) Bread mould (iv) Rust fungus

A

a-iii, b-ii, c-iv, d-i

B

a-i, b-iii, c-ii, d-iv

C

a-iii, b-ii, c-i, d-iv

D

a-iv, b-iii, c-ii, d-i

Question 200: Palette 200/331

Allen MCQ

Match Column-I with Column-II.

Column-I	Column-II
(a) Euglenoid (b) Dinoflagellate (c) Slime mould (d) Plasmodium	(i) Parasitic (ii) Saprophytic (iii) Photosynthetic (iv) Switching between photosynthetic and heterotrophic mode

A

a-iii, b-iv, c-ii, d-i

B

a-iv, b-ii, c-i, d-iii

C

a-iv, b-iii, c-ii, d-i

D

a-iv, b-ii, c-iii,d-i

Question 201: Palette 201/331

Allen MCQ

Archaebacteria differ from other bacteria in having a:-

A

Different cell wall and cell membrane structure

B

Different cellular organization

C

Parasitic nature

D

Both (2) and (3)

Question 202: Palette 202/331

Allen MCQ

Nitrogen fixing cyanobacteria are :-

A

Rhizobium, Nostoc

B

Rhizobium, Anabaena

C

Nostoc, Anabaena

D

Anabaena, Azolla

Question 203: Palette 203/331

Allen MCQ

The vast majority of bacteria are :-

A

Symbiotic

B

Autotrophic

C

Heterotrophic

D

Nitrogen fixing

Question 204: Palette 204/331

Allen MCQ

Which character indicates that Cyanobacteria are similar to higher green plants ?

A

Type of cell wall

B

Nitrogen fixation ability

C

Presence of chlorophyll 'a'

D

Presence of gelatinous sheath

Question 205: Palette 205/331

Allen MCQ

Typhoid and tetanus are caused by :-

A

Bacteria

B

Virus

C

Viroids

D

Fungi

Question 206: Palette 206/331

Allen MCQ

Which one of the following prokaryotes lack cell wall?

A

Virus

B

Cyanobacteria

C

Mycoplasma

D

Protozoa

Question 207: Palette 207/331

Allen MCQ

According to five kingdom classification Protista includes :-

A

Chrysophytes, Dinoflagellates, Protozoans

B

Diatoms, Euglenoids, Virus

C

Dinoflagellates, Protozoans, Red algae

D

Chrysophytes, Bryophytes, Protozoans, Slime mould

Question 208: Palette 208/331

Allen MCQ

Which organisms have silica in their cell wall?

A

Dinoflagellates

B

Slime mould

C

Diatoms

D

Euglenoids

Question 209: Palette 209/331

Allen MCQ

Which organism is responsible for red surface of sea?

A

Euglena

B

Gonyaulax

C

Amoeba

D

Paramoecium

Question 210: Palette 210/331

Allen MCQ

Which unicellular, photosynthetic eukaryote lacks cell wall ?

A

Mycoplasma

B

Amoeba

C

Euglena

D

Slime mould

Question 211: Palette 211/331

Allen MCQ

Select incorrect statement about fungi ?

A

The cell walls are composed of chitin and polysaccharides

B

These are heterotrophic organisms

C

They are autotrophic organism

D

They are absorptive in nature

Question 212: Palette 212/331

Allen MCQ

In fungi, vegetative reproduction takes place by:-

A

Fragmentation

B

Conidia

C

Zygospore

D

Oospore

Question 213: Palette 213/331

Allen MCQ

In ascomycetes and basidiomycetes, the dikaryotic cell is :-

A

Haploid

B

Diploid

C

Triploid

D

Polyploid

Question 214: Palette 214/331

Allen MCQ

Which of the following is not a member of class phycomycetes ?

A

Albugo

B

Mucor

C

Rhizopus

D

Neurospora

Question 215: Palette 215/331

Allen MCQ

The mycelium is aseptate and coenocytic in:-

A

Phycomycetes

B

Basidiomycetes

C

Deuteromycetes

D

Ascomycetes

Question 216: Palette 216/331

Allen MCQ

Septate and branched mycelium is found in:-

A

Basidiomycetes

B

Deuteromycetes

C

Ascomycetes

D

All the above

Question 217: Palette 217/331

Allen MCQ

Select correct matched pair / pairs :-

A

Claviceps – Ascomycetes

B

Morels – Ascomycetes

C

Agaricus – Basidiomycetes

D

All the above

Question 218: Palette 218/331

Allen MCQ

Asexual reproduction takes place by conidia formation in :-

A

Aspergillus

B

Penicillium

C

Colletotrichum

D

All the above

Question 219: Palette 219/331

Allen MCQ

Which of the following are examples of unicellular algae ?

A

Chlamydomonas

B

Riccia

C

Chlorella

D

Both (1) & (3)

Question 220: Palette 220/331

Allen MCQ

Which of the following are not considered in five kingdom system of classification ?

A

Lichen

B

Virus

C

Viroid

D

All the above

Question 221: Palette 221/331

Allen MCQ

The name virus that means venom or poisonous fluid was given by :-

A

Pasteur

B

Ivanowsky

C

Stanley

D

Both (2) & (3)

Question 222: Palette 222/331

Allen MCQ

Viroid was discovered by :-

A

Haeckel

B

Pasteur

C

T.O. Diener

D

Theophrastus

Question 223: Palette 223/331

Allen MCQ

Bacteriophages are generally :-

A

ss DNA virus

B

ds DNA virus

C

ss RNA virus

D

ds RNA virus

Question 224: Palette 224/331

Allen MCQ

Select true statement :-

A

Viruses are obligate parasites

B

In Lichens, algal component is called phycobiont

C

In Lichens, Fungal component is called mycobiont

D

All the above

Question 225: Palette 225/331

Allen MCQ

Which group shows the most extensive metabolic diversity ?

A

Plantae

B

Animalia

C

Monera

D

Fungi

Question 226: Palette 226/331

Allen MCQ

Archaebacteria differ from other bacteria in:-

A

Nucleoid

B

Composition of cell wall

C

Composition of cytoplasm

D

Composition of genetic material

Question 227: Palette 227/331

Allen MCQ

Which group of organisms is responsible for the production of biogas from the dung of cows and buffaloes ?

A

Methanomonas

B

Methanogens

C

Cyanobacteria

D

Mycoplasma

Question 228: Palette 228/331

Allen MCQ

Choose the correct statement :-

A

Most of the bacteria are autotrophs

B

All bacteria are heterotrophs

C

Some bacteria are heterotrophs

D

Most of the bacteria are heterotrophs

Question 229: Palette 229/331

Allen MCQ

Which of the following character is common in both cyanobacteria and green plants ?

A

Cell wall composition

B

Presence of chlorophyll 'a'

C

Presence of heterocyst

D

Presence of 80s ribosome

Question 230: Palette 230/331

Allen MCQ

Nostoc can fix atmospheric nitrogen in specialised cell, called :-

A

Chromatophore

B

Zoospore

C

Heterocyst

D

Oospore

Question 231: Palette 231/331

Allen MCQ

Which process is not performed by bacterial activity?

A

Production of antibiotics

B

Fixing nitrogen in legumes

C

Making curd from milk

D

Production of pseudo mycelium

Question 232: Palette 232/331

Allen MCQ

Choose the incorrect statement regarding Mycoplasma :-

A

They lack cell wall

B

They are smallest living cell

C

They can survive without oxygen

D

They have mesosome for respiration

Question 233: Palette 233/331

Allen MCQ

Which are chief producers of oceans ?

A

Diatoms

B

Dinoflagellates

C

Euglenoid

D

Green algae

Question 234: Palette 234/331

Allen MCQ

Which organism is responsible for making the sea appear red by rapid multiplication?

A

Euglena

B

Paramoecium

C

Gonyaulax

D

Trypanosoma

Question 235: Palette 235/331

Allen MCQ

Euglenoids have a protein rich layer instead of a cell wall. This layer is called as :-

A

Epidermis

B

Skin

C

Pellicle

D

Middle layer

Question 236: Palette 236/331

Allen MCQ

Choose the incorrect statement from following:

A

Dinoflagellates have stiff cellulosic plates on the outer surface.

B

Euglenoids have two flagella, one lies longitudinally and the other transversely.

C

Slime mould spores are dispersed by air currents.

D

In diatoms, the cell walls form two thin overlapping shells, which fit together as in a soap box.

Question 237: Palette 237/331

Allen MCQ

Which group of organisms is used to make bread and beer?

A

Rhizopus

B

Yeast

C

Albugo

D

Neurospora

Question 238: Palette 238/331

Allen MCQ

Fungus prefers to grow in :-

A

Warm and humid places

B

Cold and humid places

C

Warm and cold both

D

Warm, cold and humid places

Question 239: Palette 239/331

Allen MCQ

In fungi when the hyphae are continuous and branched tubes and filled with multinucleated cytoplasm, these are called:-

A

Unicellular hyphae

B

Coenocytic hyphae

C

Multicellular hyphae

D

Both (1) and (3)

Question 240: Palette 240/331

Allen MCQ

In fungi sexual reproduction is by :-

A

Fragmentation, Ascospores and Basidiospores

B

Budding, Conidia, and Basidiospores

C

Oospores, Ascospores and Basidiospores

D

Fission, Zoospores, Oospores BBC307

Question 241: Palette 241/331

Allen MCQ

Mycelium of members of phycomycetes is:-

A

Septate and coenocytic

B

Aseptate and coenocytic

C

Septate and multicellular

D

Septate and unicellular

Question 242: Palette 242/331

Allen MCQ

Choose the incorrect statement about phycomycetes :-

A

Members are found in aquatic habitats

B

Spores are endogenously produced in sporangium

C

Zygospore is formed by reduction division

D

Its members reproduce sexually may be isogamous, anisogamous or oogamous.

Question 243: Palette 243/331

Allen MCQ

Which fungus is used extensively in biochemical and genetic work ?

A

Agaricus

B

Aspergillus

C

Claviceps

D

Neurospora

Question 244: Palette 244/331

Allen MCQ

Choose the incorrect statement about ascomycetes :-

A

Mycelium is branched and septate

B

Sexual spores are produced endogenously .

C

They have sac like structure in which karyogamy takes place.

D

Reduction division occurs in fruiting bodies and form conidia.

Question 245: Palette 245/331

Allen MCQ

Which group of organism is related with basidiomycetes ?

A

Mushroom, Ustilago, Aspergillus

B

Puffballs, Agaricus, Aspergillus

C

Mushroom, Ustilago, Agaricus

D

Ustilago, Aspergillus, Agaricus

Question 246: Palette 246/331

Allen MCQ

Which set of diseases is caused by members of basidiomycetes ?

A

Rust and smut

B

Ergot and smut

C

Ergot and rust

D

Citrus canker and rust

Question 247: Palette 247/331

Allen MCQ

Fungi imperfecti are called :

A

members of phycomycetes

B

members of ascomycetes

C

members of basidiomycetes

D

members of deuteromycetes

Question 248: Palette 248/331

Allen MCQ

Which is not found in members of deuteromycetes ?

A

Asexual reproduction

B

Mode of nutrition

C

Structure of mycelium

D

Sexual reproduction

Question 249: Palette 249/331

Allen MCQ

Which of the following are noncellular organisms that are characterized by having an inert crystalline structure outside the living cell:-

A

Bacteria

B

Mycoplasma

C

Virus

D

Lichen

Question 250: Palette 250/331

Allen MCQ

Select false statement :-

A

Lichens are symbiotic association between algae & fungi

B

Viruses are smaller than bacteria

C

Virus name are obligate parasites

D

Viruses are facultative parasite

Question 251: Palette 251/331

Allen MCQ

Select incorrect statement about viroid :-

A

Free infectious RNA

B

It was discovered by T.O. Diener

C

It causes potato spindle tuber disease

D

It contains high molecular weight RNA

Question 252: Palette 252/331

Allen MCQ

Which is incorrect statement ?

A

The Mycoplasma are organisms that completely lack a cell wall.

B

Mycoplasma can survive without oxygen.

C

Mycoplasma are the smallest living cells.

D

Mycoplasma can cause disease only in plants.

Question 253: Palette 253/331

Allen MCQ

Generally plant viruses are :-

A

Double stranded DNA viruses

B

Single stranded RNA viruses

C

Single stranded DNA viruses

D

Double stranded RNA viruses

Question 254: Palette 254/331

Allen MCQ

Modern farmer's can increase the yield of Paddy upto 50% by the use of :-

A

Cyanobacteria

B

Rhizobium

C

Cyanobacteria in Azolla pinnata

D

Farm yard manure

Question 255: Palette 255/331

Allen MCQ

Plant pathogenic bacteria are mostly :-

A

Gram + Non spore forming

B

Gram - Negative non spore forming

C

Gram + spore forming

D

Gram (-) spore forming

Question 256: Palette 256/331

Allen MCQ

Nitrogen fixing bacteria convert :-

A

N₂ → NH₃

B

NH₄⁺ → Nitrates

C

NO₂ → NO₃

D

NO₃ → N₂

Question 257: Palette 257/331

Allen MCQ

Main reason of water bloom in rivers, lakes, sea etc. is:-

A

Brown algae and green algae

B

Cyanobacteria and dinoflagellates

C

Eichornia

D

Fishes

Question 258: Palette 258/331

Allen MCQ

Genetic material of prokaryotic cell:-

A

Non histonic double stranded DNA

B

Histonic double stranded DNA

C

Histone & DNA both are absent

D

Histone without DNA

Question 259: Palette 259/331

Allen MCQ

Diatomaceous earth is used as heat insulator in boilers and steam pipes because the cell wall of diatom -

A

Composed of Iron

B

Composed of Silicon dioxide

C

Is conductor of heat

D

Is bad conductor of electricity

Question 260: Palette 260/331

Allen MCQ

Enzymes are not found in-

A

Fungi

B

Algae

C

Virus

D

Cyanobacteria

Question 261: Palette 261/331

Allen MCQ

Plant Decomposers belong to :-

A

Monera and fungi

B

Fungi and plants

C

Protista and Animalia

D

Animalia and Monera

Question 262: Palette 262/331

Allen MCQ

Sexual reproduction in fungus occurs in the following sequential event. Arrange them properly. (A) Fusion of two nuclei called karyogamy. (B) Fusion of protoplasm between two motile or non-motile gametes. (C) Meiosis in zygote resulting in haploid spores.

A

A → B → C

B

B → A → C

C

C → B → A

D

C → A → B

Question 263: Palette 263/331

Allen MCQ

Which bacteria is utilized in Gober gas plant?

A

Methanogens

B

Nitrifying bacteria

C

Ammonifying bacteria

D

Denitrifying bacteria

Question 264: Palette 264/331

Allen MCQ

In bacteria, plasmid is :-

A

Extra chromosomal material

B

Main DNA

C

Non functional DNA

D

Repetitive gene

Question 265: Palette 265/331

Allen MCQ

Sequence of which of the following is used to know the phylogeny :-

A

m-RNA

B

r-RNA

C

t-RNA

D

DNA

Question 266: Palette 266/331

Allen MCQ

In five kingdom system, the main basis of classification :-

A

Structure of nucleus

B

Nutrition

C

Structure of cell wall

D

Asexual reproduction

Question 267: Palette 267/331

Allen MCQ

Organisms which obtain energy by the oxidation of reduced inorganic compounds are called

A

Photo autotrophs

B

Chemo autotrophs

C

Saprozoic

D

Coproheterotrophs

Question 268: Palette 268/331

Allen MCQ

Which one of the following bacteria has found extensive use in genetic engineering work in plants:-

A

Clostridium septicum

B

Xanthomonas citri

C

Bacillus coagulens

D

Agrobacterium tumefaciens

Question 269: Palette 269/331

Allen MCQ

In which kingdom would you classify the archaea and nitrogen-fixing organisms, if the five-kingdom system of classification is used:-

A

Plantae

B

Fungi

C

Protista

D

Monera

Question 270: Palette 270/331

Allen MCQ

In oogamy, fertilization involves :-

A

A large motile female gamete and a small non–motile male gamete

B

A small non–motile female gamete and a large motile male gamete

C

A large non–motile female gamete and a small motile male gamete

D

A large non–motile female gamete and a large non–motile male gamete

Question 271: Palette 271/331

Allen MCQ

Flagella of prokaryotic and eukaryotic cells differ in :-

A

Microtubular organization and function

B

Type of movement and placement in cell

C

Location in cell and mode of functioning

D

Microtubular organization and type of movement

Question 272: Palette 272/331

Allen MCQ

If by radiation all nitrogenase enzyme are inactivated, then there will be no :-

A

Conversion from ammonium to nitrate in soil

B

Fixation of nitrogen in legumes

C

Fixation of atmospheric nitrogen

D

Conversion from nitrate to nitrite in legumes

Question 273: Palette 273/331

Allen MCQ

A free living nitrogen–fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is :-

A

Anabaena

B

Tolypothrix

C

Chlorella

D

Nostoc

Question 274: Palette 274/331

Allen MCQ

Carbohydrates, the most abundant biomolecules on earth, are produced by :

A

some bacteria, algae and green plant cells

B

all bacteria, fungi and algae

C

fungi, algae and green plant cells

D

viruses, fungi and bacteria

Question 275: Palette 275/331

Allen MCQ

Barophilic prokaryotes :

A

occur in water containing high concentrations of barium hydroxide.

B

readily grow and divide in sea water enriched in any soluble salt of barium

C

grow and multiply in very deep marine sediments

D

grow slowly in highly alkaline frozen lakes at high altitudes

Question 276: Palette 276/331

Allen MCQ

Auxospores and hormocysts are formed, respectively, by :

A

Several diatoms and a few cyanobacteria

B

Some diatoms and several cyanobacteria

C

Several cyanobacteria and several diatoms

D

Some cyanobacteria and many diatoms

Question 277: Palette 277/331

Allen MCQ

Which of the following is non-cellular organism?

A

Bacteria

B

Fungi

C

Algae

D

Virus

Question 278: Palette 278/331

Allen MCQ

Find the incorrect match :-

A

Ustilago - belongs to class basidiomycetes

B

Agaricus - belongs to class basidiomycetes

C

Trichoderma - sexual cycle is found

D

Alternaria - sexual cycle is not found

Question 279: Palette 279/331

Allen MCQ

Find the incorrect statement about fungi :-

A

They show a great diversity in morphology and habitats

B

Fungi are cosmopolitan and occur in air, water, soil and as parasites also

C

They prefer to grow in cold and dry places

D

With the exception of yeasts, fungi are filamentous

Question 280: Palette 280/331

Allen MCQ

Find the correct statements about fungi :-
(A) Most of the fungi are saprophytes (B) Fungi can also survive as symbionts (C) Sexual reproduction in fungi involves three steps (D) Reduction division in fungi occurs in fruiting bodies which forms haploid spores

A

A, B are correct

B

C, D are correct

C

A, B & C are correct

D

A, B, C & D are correct

Question 281: Palette 281/331

Allen MCQ

Choose the incorrect statement regarding decomposer :-

A

They may be prokaryotes or eukaryotes.

B

They may be unicellular or multicellular

C

They convert inorganic into organic compounds

D

They play a great role in ecology

Question 282: Palette 282/331

Allen MCQ

With respect to fungal sexual cycle, what is the correct sequence ?

A

Karyogamy, plasmogamy & meiosis

B

Meiosis, plasmogamy & karyogamy

C

Plasmogamy, karyogamy & meiosis

D

Meiosis, karyogamy & plasmogamy

Question 283: Palette 283/331

Allen MCQ

In prokaryotes, chromatophores are –

A

Specialized granules responsible for colouration of cells

B

Structures responsible for organizing the shape of the organism

C

Inclusion bodies lying free inside the cells for carrying out various metabolic activities

D

Internal membrane systems that may become extensive and complex in photosynthetic bacteria

Question 284: Palette 284/331

Allen MCQ

All eukaryotic unicellular organisms belong to-

A

Monera

B

Protista

C

Fungi

D

Bacteria

Question 285: Palette 285/331

Allen MCQ

The five kingdom classification was proposed by-

A

R.H. Whittaker

B

C.Linnaeus

C

A. Roxberg

D

Virchow

Question 286: Palette 286/331

Allen MCQ

Organisms living in salty areas are called as

A

Methanogens

B

Halophiles

C

Heliophytes

D

Thermoacidophiles

Question 287: Palette 287/331

Allen MCQ

Naked cytoplasm, multinucleated and saprophytic are the characteristics of :

A

Monera

B

Protista

C

Fungi

D

Slime molds

Question 288: Palette 288/331

Allen MCQ

An association between roots of higher plants and fungi is called-

A

Lichen

B

Fern

C

Mycorrhiza

D

BGA

Question 289: Palette 289/331

Allen MCQ

A dikaryon is formed when

A

Meiosis is arrested

B

The two haploid nuclei do not fuse immediately

C

Cytoplasm does not fuse

D

None of the above

Question 290: Palette 290/331

Allen MCQ

Contagium vivum fluidum was proposed by

A

D.J. Ivanowsky

B

M.W. Beijerinek

C

Stanley

D

Robert Hook

Question 291: Palette 291/331

Allen MCQ

Mycobiont and Phycobiont are found in

A

Mycorrhiza

B

Root

C

Lichens

D

BGA

Question 292: Palette 292/331

Allen MCQ

Difference between Virus and Viroid is

A

Absence of protein coat in viroid but present in virus

B

Presence of low molecular weight RNA in virus but absent in viroid

C

Both (1) and (2)

D

None of the above

Question 293: Palette 293/331

Allen MCQ

The following features belong to class
(A) Asexual reproduction by zoospores or aplanospores. (B) Fusion of gametes may be isogamous, anisogamous or oogamous. (C) Mycelium is aseptate and coenocytic. (D) Spores are endogenously produced in sporangium.

A

Ascomycetes

B

Deuteromycetes

C

Phycomycetes

D

Basidiomycetes

Question 294: Palette 294/331

Allen MCQ

Viruses are non-cellular organisms but replicate themselves once they infect the host cell. To which of the following kingdom do viruses belong to?

A

Monera

B

Protista

C

Fungi

D

None of the above

Question 295: Palette 295/331

Allen MCQ

Members of phycomycetes are found in i. Aquatic habitats ii. On decaying wood iii. Moist and damp places iv. As obligate parasites on plants Choose from the following options

A

None of the above

B

i and iv

C

ii and iii

D

All of the above

Question 296: Palette 296/331

Allen MCQ

Cyanobacteria are classified under

A

Protista

B

Plantae

C

Monera

D

Algae

Question 297: Palette 297/331

Allen MCQ

Fusion of two gametes which are dissimilar in size is termed as

A

Oogamy

B

Isogamy

C

Anisogamy

D

Zoogamy

Question 298: Palette 298/331

Allen MCQ

Which of the following criterion was not used for classification of fungi?

A

Structure of mycelium

B

Structure of fruiting body

C

Complexity of cell wall

D

Mode of spore formation

Question 299: Palette 299/331

Allen MCQ

In which kingdom would you classify the archaebacteria and nitrogen-fixing organisms. If the five-kingdom system of classification is used ?

A

Monera

B

Plantae

C

Fungi

D

Protista

Question 300: Palette 300/331

Allen MCQ

How many kingdoms include prokaryotic organisms only, in three domain classification?

A

One

B

Three

C

Two

D

Four

Question 301: Palette 301/331

Allen MCQ

A bacterium is able of withstand extreme heat, dryness, and toxic chemical this indicates that it is probably able to form :

A

Endospore

B

Thick peptidoglycan wall

C

Capsule

D

Toxins

Question 302: Palette 302/331

Allen MCQ

Heterocysts as specialized cells to fix atmospheric nitrogen are produced by:

A

Rhodospirillum and Nostoc

B

Anabaena and Azolla

C

Nostoc and Anabaena

D

Rhodopseudomonas and Oscillatoria

Question 303: Palette 303/331

Allen MCQ

Which of the following are the characters of dinoflagellates?
(i) They are planktonic golden yellow algae with soap box like structure.
(ii) They are marine red biflagellated Protista.
(iii) They appear yellow, green, brown, blue and red in colour.
(iv) They are biflagellated organisms with pellicle.
(v) They are saprophytic (or) parasitic unicellular forms.

A

(ii) and (iii)

B

(ii) and (v)

C

(i), (ii) and (iii)

D

(ii), (iv) and (v)

Question 304: Palette 304/331

Allen MCQ

Which statement is incorrect regarding fungi :

A

Stored food is glycogen and oil

B

Fungi are haploid in nature

C

Higher Fungi are more advanced than lower fungi in complexity of sex organs.

D

Haplontic life cycle and zygotic meiosis occurs in most of the fungi

Question 305: Palette 305/331

Allen MCQ

Match column I with column II and choose the right option :

Column-I	Column-II
(a) Ascomycetes (b) Basidiomycetes (c) Deuteromycetes (d) Phycomycetes	(i) Rhizopus (ii) Penicillium (iii) Ustilago (iv) Alternaria

A

a-iv, b-iii, c-i, d-ii

B

a-ii, b-iii, c-iv, d-i

C

a-iv, b-i, c-iii, d-ii

D

a-iii, b-iv, c-ii, d-i

Question 306: Palette 306/331

Allen MCQ

Which of the following is not a sexual spore (a) Sporangiospore (b) Ascospore (c) Basidiospore (d) Oospore (e) Zygospore

A

(a), (b) and (c)

B

only (a)

C

(b), (c) and (d)

D

(d) and (e)

Question 307: Palette 307/331

Allen MCQ

Which of the following group of kingdom Protista is being described in the statements given below ?
(i) This group includes diatoms and golden algae.
(ii) They are microscopic and float passively in water currents (plankton).
(iii) Most of them are photosynthetic.
(iv) They have deposits in their habitat; this accumulation over billion of years is referred to as ‘diatomaceous earth’.

A

Dinoflagellates

B

Chrysophytes

C

Euglenoids

D

Slime moulds

Question 308: Palette 308/331

Allen MCQ

The given statements are some characters of a particular group of Kingdom Protista.
(i) Most of them are fresh water organisms found in standing water.
(ii) They have a protein rich layer (called pellicle) which makes their body flexible.
(iii) They have two flagella, a short and a long one.
(iv) Though they are photosynthetic in the presence of sunlight, but in the absence of sunlight they behave like heterotrophs by predating on other smaller organisms.
Identify the correct group on the basis of these characters.

A

Protozoans

B

Chrysophytes

C

Slime moulds

D

Euglenoids

Question 309: Palette 309/331

Allen MCQ

Which of the following statement(s) is/are correct about ascomycetes ?
(i) Neurospora, which is used in biochemical and genetic work is a member of this class.
(ii) They are mostly multicellular, e.g., Yeast, or rarely unicellular, e.g., Penicillium.
(iii) They are saprophytic, decomposers, parasitic or coprophilous.
(iv) Some examples are Aspergillus, Claviceps and Neurospora.

A

Both (i) and (ii)

B

Only (ii)

C

(i), (iii) and (iv)

D

All of these

Question 310: Palette 310/331

Allen MCQ

Which of the following statement(s) is/are correct about class basidiomycetes ?
(i) They are commonly known as imperfect fungi because only the asexual or vegetative phases of these fungi are known.
(ii) They grow in soil, on logs and tree stumps and in living plant bodies as parasites, e.g., rusts and smuts.
(iii) The mycelium is branched and septate.
(iv) Some common members are Agaricus, Ustilago and Puccinia.

A

Only (i)

B

Both (ii) and (iii)

C

(ii), (iii) and (iv)

D

All of these

Question 311: Palette 311/331

Allen MCQ

Assertion : Euglena can be placed in the plant kingdom due to the presence of chlorophyll. Reason : Euglena cannot be classified on the basis of two kingdom system of classification.

A

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

B

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

C

If Assertion is true but Reason is false.

D

If both Assertion and Reason are false.

Question 312: Palette 312/331

Allen MCQ

Assertion : Outside a living cell, viruses have must crystalline statements. Reason : Viroids have a protein coat.

A

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

B

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

C

If Assertion is true but Reason is false.

D

If both Assertion and Reason are false.

Question 313: Palette 313/331

Allen MCQ

Assertion : TMV is a virus which causes Tobacco mosaic disease. Reason : TMV has RNA as genetic material.

A

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

B

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

C

If Assertion is true but Reason is false.

D

If both Assertion and Reason are false.

Question 314: Palette 314/331

Allen MCQ

Assertion : Yeasts such as Saccharomyces cerevisiae are used in baking industry. Reason : Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.

A

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

B

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.

C

If Assertion is true but Reason is false.

D

If both Assertion and Reason are false.

Question 315: Palette 315/331

Allen Match the Columns

Match the terms given in column-I with their examples given in column-II and choose the correct option :

Column-I	Column-II
(a) Ascus (b) Basidium (c) Protista (d) Cyanobacteria (e) Animalia	(i) Spirulina (ii) Penicillium (iii) Agaricus (iv) Euglena (v) Sponges

A

a-ii, b-iii, c-iv, d-v, e-i

B

a-i, b-ii, c-iii, d-v, e-iv

C

a-ii, b-v, c-iii, d-i, e-iv

D

a-ii, b-iii, c-iv, d-i, e-v

Question 316: Palette 316/331

Allen MCQ

Given below are two statements: Statement-I: Fungi and members of the Monera and Protista having cell walls have now been excluded from Plantae, although according to earlier classifications they were placed in the same kingdom. In the light of the above statements, choose the most appropriate answer from the options given below:

A

Both Statement-I and Statement-II are correct.

B

Both Statement-I and statement-II are incorrect.

C

Statement-I is correct but Statement-II is incorrect.

D

Statement-I is incorrect but Statement-II is correct.

Question 317: Palette 317/331

Allen MCQ

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Cyanobacteria that are referred to as blue green algae are not "algae" anymore.
Reason (R) : All unicellular prokaryotes are placed in kingdom Monera and algae are placed in kingdom Plantae
In the light of the above statements,
choose the most appropriate answer from the options given below :

A

Both (A) & (R) are correct but (R) is not the correct explanation of (A).

B

(A) is correct but (R) is not correct.

C

(A) is not correct but (R) is correct.

D

Both (A) & (R) are correct and (R) is the correct explanation of (A).

Question 318: Palette 318/331

Allen MCQ

The thalloid body of a slime mould (Myxomycetes) is known as: (kingdom Protista)

A

Fruiting body

B

Mycelium

C

Protonema

D

Plasmodium

Question 319: Palette 319/331

Allen MCQ

The bacterium (Clostridium botulinum) that causes botulism is :

A

a facultative aerobe

B

an obligate aerobe

C

a facultative anaerobe

D

an obligate anaerobe

Question 320: Palette 320/331

Allen MCQ

Thermococcus, Methanococcus and Methanobacterium exemplify :-

A

Bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria

B

Bacteria that contain a cytoskeleton and ribosomes

C

Archaebacteria that contain protein homologous to eukaryotic core histones

D

Archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled.

Question 321: Palette 321/331

Allen MCQ

Nitrogen fixation in root nodules of Alnus is brought about by :-

A

Frankia

B

Azorhizobium

C

Bradyrhizobium

D

Clostridium

Question 322: Palette 322/331

Allen MCQ

Single-celled eukaryotes are included in :-

A

Monera

B

Protista

C

Fungi

D

Archaea

Question 323: Palette 323/331

Allen MCQ

The common nitrogen-fixer in paddy fields is:

A

Frankia

B

Rhizobium

C

Azospirillum

D

Oscillatoria

Question 324: Palette 324/331

Allen MCQ

Select the correct combination of the statement (a-d) regarding the characteristics of certain organisms :
(a) Methanogens are Archaebacteria which produce methane in marshy areas
(b) Nostoc is filamentous blue-green alga which fixes atmospheric nitrogen
(c) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose
(d) Mycoplasma lack a cell wall and can survive without oxygen
The correct statements are :

A

(a), (b), (c)

B

(b), (c), (d)

C

(a), (b), (d)

D

(b), (c)

Question 325: Palette 325/331

Allen MCQ

Pigment-containing membranous extensions in some cyanobacteria are :

A

Chromatophores

B

Heterocysts

C

Basal bodies

D

Pneumatophores

Question 326: Palette 326/331

Allen Match the Columns

Match the type of protozoans given in Column-I with their examples given in Column-II and choose the correct option

Column-I	Column-II
(a) Amoeboid protozoans (b) Ciliated protozoans (c) Flagellated protozoans (d) Sporozoans	(i) Paramecium (ii) Plasmodium (iii) Amoeba (iv) Trypanosoma

A

a-i, b-iii, c-iv, d-ii

B

a-iii, b-i, c-ii, d-iv

C

a-iii, b-i, c-iv, d-ii

D

a-iii, b-iv, c-i, d-ii

Question 327: Palette 327/331

Allen MCQ

Which of the following organisms is/are correctly assigned its/their taxonomic group?

A

Paramoecium and Plasmodium belong to the same kingdom as that of Penicillium.

B

Lichen is a composite organism formed from the symbiotic association of an alga and a protozoan.

C

Yeast used in making bread and beer is a fungus.

D

Nostoc and Anabaena are examples of protista.

Question 328: Palette 328/331

Allen MCQ

Protozoans are not included in kingdom animalia because they are

A

mostly asymmetrical.

B

unicellular eukaryotes.

C

heterotrophic in nature.

D

multicellular prokaryotes.

Question 329: Palette 329/331

Allen MCQ

Assertion : Longitudinal binary fission in found in Trypanosoma. Reason : Binary fission is a method of sexual reproduction.

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

B

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

Assertion is true but Reason is false

D

Both Assertion and Reason are false.

Question 330: Palette 330/331

Allen MCQ

Statement-1: Amoeba has one and Paramecium has two contractile vacuoles. Statement-2: Fresh water protozoans get rid of excess water through contractile vacuole.

A

Both Statements true

B

Both Statements false

C

Only statement-1 true

D

Only statement-2 true

Question 331: Palette 331/331

Allen Match the Columns

Match the Column-I and Column-II and select the correct option?

Column-I	Column-II
(a) Kala-azar (b) Amoebic dysentery (c) Leucorrhoea (d) Sleeping sickness	(i) Trichomonas vaginalis (ii) Trypanosoma gambiense (iii) Leishmania donovani (iv) Entamoeba histolytica

A

i- c, ii - b, iii - a, iv - d

B

i - a, ii - b, iii - c, iv - d

C

i - c, ii - d, iii - a, iv - b

D

i - a, ii - c, iii - d, iv - b