Question 1: Palette 1/123

Allen 1942 MCQ

Which one of the following is not true about antibiotics?

A

First antibiotic was discovered by Alexander Fleming

B

The term 'antibiotic' was coined by S. Waksman in 1942.

C

Some persons can be allergic to a particular antibiotic

D

Each antibiotic is effective only against one particular kind of germ.

Question 2: Palette 2/123

Allen MCQ

Which one of the microorganism is used for production of citric acid in industries?

A

Lactobacillus bulgaricus

B

Penicillium citrinum

C

Aspergillus niger

D

Rhizopus nigricans

Question 3: Palette 3/123

Allen MCQ

Formation of vinegar from alcohol is caused by :-

A

Bacillus subtilis

B

Clostridium

C

Acetobacter aceti

D

Azotobacter BMH003

Question 4: Palette 4/123

Allen MCQ

Biogas consists of:-

A

Carbon monoxide, methane and hydrogen

B

Carbon dioxide, methane and hydrogen

C

Carbon monoxide, ethane and hydrogen

D

Carbon dioxide, ethane and hydrogen

Question 5: Palette 5/123

Allen MCQ

Biogas is produced by anaerobic breakdown of biomass of agricultural waste by methanogenic bacteria. It is a:-

A

One step process

B

Two step process

C

Three step process

D

Multistep process

Question 6: Palette 6/123

Allen MCQ

Beer is obtained from :-

A

Molasses

B

Grapes

C

Barley

D

Rye

Question 7: Palette 7/123

Allen MCQ

Maximum percentage of alcohol present in the product of yeast fermentation :-

A

Brandy

B

Gin

C

Rum

D

Wine

Question 8: Palette 8/123

Allen MCQ

Which of the following microorganisms use for swiss cheese?

A

Propionibacterium

B

Geotrichum

C

Penicillium

D

Streptococcus

Question 9: Palette 9/123

Allen MCQ

Rate limiting material in biogas production is:

A

Methane

B

Cellulose

C

Starch

D

Acetic acid

Question 10: Palette 10/123

Allen MCQ

Which group is not related with petro- plantation?

A

Euphorbiaceae

B

Asclepiadaceae

C

Apocyanaceae

D

Leguminosae

Question 11: Palette 11/123

Allen MCQ

What are the advantage of gobar gas over conventional utilization :-

A

More efficient source of energy

B

Used as good fertilizer

C

Reduces the chances of spreading of pathogens

D

All the above

Question 12: Palette 12/123

Allen MCQ

Milk is changed into curd by :—

A

Bacillus megatherium

B

Acetobacter aceti

C

Xanthomonas citri

D

Lactobacillus acidophilus

Question 13: Palette 13/123

Allen MCQ

Saccharomyces cerevisiae is used in the formation of :-

A

Ethanol

B

Methanol

C

Acetic acid

D

Antibiotics

Question 14: Palette 14/123

Allen MCQ

Modern farmers can increase the yield of Paddy upto 50% by the use of :-

A

Cyanobacteria

B

Rhizobium

C

Mycorrhiza

D

Farm yard manure

Question 15: Palette 15/123

Allen MCQ

Which one produces gas by decomposing the gobar (Dung) in gobar gas:-

A

Fungus

B

Virus

C

Methanogenic bacteria

D

Algae

Question 16: Palette 16/123

Allen MCQ

Which of the following is used to manufacture ethanol from starch?

A

Penicillin

B

Saccharomyces

C

Azotobacter

D

Lactobacillus

Question 17: Palette 17/123

Allen MCQ

Which of the following is the pair of biofertilizers associated with each other?

A

Azolla and BGA

B

Nostoc and legume

C

Rhizobium and grasses

D

Salmonella & E. coli

Question 18: Palette 18/123

Allen MCQ

Which bacteria is utilized in Gobar gas plant?

A

Methanogens

B

Nitrifying bacteria

C

Ammonifying bacteria

D

Denitrifying bacteria

Question 19: Palette 19/123

Allen MCQ

During the formation of bread it becomes porous due to release of $CO_{2}$ by the action of:

A

Yeast

B

Bacteria

C

Virus

D

Protozoans

Question 20: Palette 20/123

Allen MCQ

During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undegraded?

A

Lipids

B

Lignin

C

Hemi-cellulose

D

Cellulose

Question 21: Palette 21/123

Allen MCQ

The term "antibiotic" was coined by :-

A

Edward Jenner

B

Louis Pasteur

C

Selman Waksman

D

Alexander Fleming

Question 22: Palette 22/123

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

Rhizobium BMH022

Question 23: Palette 23/123

Allen MCQ

The technology of biogas production was developed in India mainly due to the efforts of:

A

IARI

B

KVIC

C

Both (1) and (2)

D

WHO

Question 24: Palette 24/123

Allen MCQ

Biogas produced by anaerobic fermentation of waste biomass consists of :-

A

methane

B

traces of $\mathrm{H}_{2}, \mathrm{H}_{2} \mathrm{~S}$ and $\mathrm{N}_{2}$

C

$\mathrm{CO}_{2}$

D

all of these

Question 25: Palette 25/123

Allen MCQ

Which one of the following is used in making of bread?

A

Rhizopus stolonifer

B

Saccharomyces cerevisiae

C

Zygosaccharomyces

D

Saccharomyces ludwigi

Question 26: Palette 26/123

Allen MCQ

A common biocontrol agent for the control of plant diseases caused by fungi is :-

A

Agrobacterium

B

Glomus

C

Trichoderma

D

Baculovirus

Question 27: Palette 27/123

Allen MCQ

Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?

A

Glomus

B

Trichoderma

C

Azotobacter

D

Aspergillus

Question 28: Palette 28/123

Allen MCQ

Lactic acid bacteria (LAB) grow in milk and convert it to curd and also improve its nutritional quality by increasing :-

A

Vitamin A

B

Vitamin $\mathsf{B}_{12}$

C

Vitamin $\mathsf{B}_6$

D

Vitamin C and A

Question 29: Palette 29/123

Allen MCQ

The puffed-up appearance of dough is due to:-

A

Growth of LAB

B

Production of $O_{2}$ and ethanol

C

Production of $CO_{2}$

D

Growth of yeast Monascus

Question 30: Palette 30/123

Allen MCQ

Select the correct match :-

A

Aspergillus niger - Acetic acid

B

Streptokinase - Immunosuppressive

C

Cyclosporin - A - Clot buster

D

Statins - Blood Cholesterol lowering agent

Question 31: Palette 31/123

Allen MCQ

Biogas is the mixture of gases produced by the microbial activity. The type of the gas produced depends upon:—

A

type of microbes

B

type of organic substrate / waste

C

size of digester

D

Both (1) and (2)

Question 32: Palette 32/123

Allen MCQ

Which biocontrol agent in very common in root ecosystem & is effective against several plant pathogens?

A

Baculoviruses

B

Trichoderma

C

Nucleopolyhedro virus

D

Ladybird beetle & Dragonflies

Question 33: Palette 33/123

Allen MCQ

Which of the following bacterium is associated with production of bioinsecticide?

A

Bacillus subtilis

B

Bacillus thuringiensis

C

Agrobacterium

D

Azotobacter

Question 34: Palette 34/123

Allen MCQ

Biopesticide include :-

A

Only bioinsecticide

B

Only bioherbicide

C

Bioinsecticide & bioherbicide

D

Bioherbicide, bioinsecticide & biofertilisers

Question 35: Palette 35/123

Allen MCQ

Bacillus thuringiensis is used to control :-

A

Moth

B

Flies

C

Mosquito

D

All the above BMH035

Question 36: Palette 36/123

Allen MCQ

Trichoderma has proved a useful micro-organism for :-

A

Gene transfer in higher plants

B

Biological control of soil-borne plant pathogens

C

Bioremediation of contaminated soils

D

reclamation of wastelands

Question 37: Palette 37/123

Allen MCQ

Microbial insecticide is :-

A

Bacillus polymyxa

B

Bacillus brevis

C

Bacillus subtilis

D

Bacillus thuringiensis

Question 38: Palette 38/123

Allen MCQ

Ladybird is useful to get rid of:-

A

Aphids

B

Mosquitoes

C

Boll worm

D

Jassids

Question 39: Palette 39/123

Allen MCQ

The domestic sewage in large cities: -

A

is processed by aerobic and then anaerobic bacteria in the primary treatment in sewage treatment plants

B

when treated in sewage treatment plants does not really require the aerobic step as the sewage contains adequate oxygen

C

has very high amounts of suspended solids and dissolved salts.

D

has a low BOD as it contains both aerobic and anearobic bacteria

Question 40: Palette 40/123

Allen MCQ

What is B.O.D.?

A

The amount of $O_{2}$ utilised by organisms in water

B

The amount of $O_{2}$ utilized by micro-organisms for decomposition

C

The total amount of $O_{2}$ present in water

D

All of the above

Question 41: Palette 41/123

Allen MCQ

BOD stands for :-

A

Biological organism death

B

Biochemical organic matter decay

C

Biotic oxidation demand

D

Biochemical oxygen demand

Question 42: Palette 42/123

Allen MCQ

Polluted water can be purified by using :-

A

Micro-organisms

B

Algae

C

Pesticides

D

Fishes

Question 43: Palette 43/123

Allen MCQ

When huge amount of sewage is dumped into a river, the BOD will?

A

Increase

B

Remain unchanged

C

Slightly decrease

D

Highly decrease

Question 44: Palette 44/123

Allen MCQ

A lake with an inflow of domestic sewage rich in organic waste may result in :-

A

Drying of the lake very soon due to algal bloom

B

An increase production of fish due to lot of nutrients

C

Death of fish due to lack of oxygen

D

Increased population of aquatic food web organisms

Question 45: Palette 45/123

Allen MCQ

In the treatment of waste water discharge, which treatment stage involves biological treatment :-

A

Primary treatment

B

Secondary treatment

C

Tertiary treatment

D

Reverse osmosis stage

Question 46: Palette 46/123

Allen MCQ

The major source of BOD in the river Ganga is

A

Leaf litter

B

Fishes

C

Human waste

D

Aquatic plants

Question 47: Palette 47/123

Allen MCQ

Assertion (A) : Currently large number of biofertilizers are available commercially in the market and farmers use these biofertilizers in their field to replenish soil nutrients. Reason (R) : Use of biofertilizers can reduce dependence on chemical fertilizers and so as environmental pollution.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is NOT the correct explanation of A

C

A is true but R is false

D

A is false but R is true

Question 48: Palette 48/123

Allen MCQ

B.O.D. is connected with :-

A

Organic matter

B

Microbes

C

Both

D

None

Question 49: Palette 49/123

Allen MCQ

Read the given statements and select the correct option. Statement A: Ministry of Environment and Forest has initiated Ganga Action Plan. Statement B: Effluent from secondary treatment cannot be released into water bodies.

A

Only A is correct

B

Only B is correct

C

Both A & B are correct

D

Both A & B are incorrect

Question 50: Palette 50/123

Allen MCQ

Assertion : Bottled fruit juice brought from market are clearer as compared to those made at home. Reason : Bottled juice possess pectinases and proteases.

A

Both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

B

Both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

C

Assertion is True but the Reason is False.

D

Both Assertion & Reason are False.

Question 51: Palette 51/123

Allen MCQ

What gases are produced in anaerobic sludge digesters :-

A

Methane and $CO_{2}$ only

B

Methane, Hydrogen Sulphide and $CO_{2}$

C

Methane, Hydrogen Sulphide and $O_{2}$

D

Hydrogen Sulphide and $CO_{2}$

Question 52: Palette 52/123

Allen MCQ

High value of BOD (Biochemical Oxygen Demand) indicates that :-

A

Water is highly polluted

B

Water is less polluted

C

Consumption of organic matter in the water is higher by the microbes

D

Water is pure

Question 53: Palette 53/123

Allen MCQ

Which of the following is wrongly matched in the given table?

A

Microbe-Trichoderma polysporum, Product-Cyclosporin A, Application-immunosuppressive drug

B

Microbe-Monascus purpureus, Product-Statins, Application-lowering of blood cholesterol

C

Microbe-Streptococcus, Product-Streptokinase, Application-removal of clot from blood vessel

D

Microbe-Clostridium butylicum, Product-Lipase, Application-removal of oil stains

Question 54: Palette 54/123

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 55: Palette 55/123

Allen MCQ

A river with an inflow of domestic sewage rich in organic waste may result in :-

A

Drying of the river very soon due to algal bloom.

B

Increased population of aquatic food web organisms.

C

An increased production of fish due to biodegradable nutrients.

D

Death of fish due to lack of oxygen.

Question 56: Palette 56/123

Allen MCQ

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from :-

A

Petroleum industry

B

Sugar industry

C

Domestic sewage

D

Dairy industry

Question 57: Palette 57/123

Allen Match the Columns

Match Column-I with Column-II and select the correct option using the codes given below:-

Column-I	Column-II
(a) Citric acid (b) Cyclosporin A (c) Statins (d) Butyric acid	(i) Trichoderma (ii) Clostridium (iii) Aspergillus (iv) Monascus

A

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

B

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

C

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

D

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

Question 58: Palette 58/123

Allen MCQ

The source of cyclosporin-A is :-

A

Acetobacter aceti

B

Saccharomyces cerevisiae

C

Aspergillus niger

D

Trichoderma polysporum

Question 59: Palette 59/123

Allen MCQ

Statins commercially used as blood cholesterol lowering agents are produced by:-

A

Agrobacterium tumefaciens

B

Trichoderma polysporum

C

Monascus purpureus

D

Trichoderma viridae

Question 60: Palette 60/123

Allen MCQ

Which of the following is a free-living biocontrol microbial agent for plant pathogen?

A

Mucor

B

Glomus

C

Trichoderma

D

Rhizobium

Question 61: Palette 61/123

Allen MCQ

Biological control agent obtained from :-

A

Bacillus thuringiensis

B

E. coli

C

Agrobacterium tumefaciens

D

Meloidogyne incognitia

Question 62: Palette 62/123

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 63: Palette 63/123

Allen MCQ

Which of the following in sewage treatment removes suspended solids?

A

Secondary treatment

B

Primary treatment

C

Sludge treatment

D

Tertiary treatment

Question 64: Palette 64/123

Allen MCQ

Conversion of milk to curd improves its nutritional value by increasing the amount of

A

Vitamin D

B

Vitamin A

C

Vitamin B $_{12}$

D

Vitamin E

Question 65: Palette 65/123

Allen MCQ

Match the following organisms with the products they produce:-

Column-I	Column-II
(a) Lactobacillus (b) Saccharomyces cerevisiae (c) Aspergillus niger (d) Acetobacter aceti	(i) Cheese (ii) Curd (iii) Citric Acid (iv) Bread (v) Acetic Acid

A

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

B

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

C

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

D

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

Question 66: Palette 66/123

Allen MCQ

Which of the following can be used as a biocontrol agent in the treatment of plant disease?

A

Trichoderma

B

Chlorella

C

Anabaena

D

Lactobacillus

Question 67: Palette 67/123

Allen MCQ

Which of the following is a commercial blood cholesterol lowering agent?

A

Cyclosporin A

B

Statin

C

Streptokinase

D

Lipases

Question 68: Palette 68/123

Allen MCQ

Select the correct group of biocontrol agents:

A

Bacillus thuringiensis, Tobacco mosaic virus, Aphids

B

Trichoderma, Baculovirus, Bacillus thuringiensis

C

Oscillatoria, Rhizobium, Trichoderma

D

Nostoc, Azospirillum, Nucleopolyhedrovirus

Question 69: Palette 69/123

Allen MCQ

A biocontrol agent to be a part of an integrated pest management should be :-

A

Species-specific and symbiotic

B

Free living and broad spectrum

C

Narrow spectrum and symbiotic

D

Species-specific and inactive on non-target organisms

Question 70: Palette 70/123

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 71: Palette 71/123

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 72: Palette 72/123

Allen MCQ

Match the following columns and select the correct option:-

Column-I	Column-II
(a) Clostridium butylicum (b) Trichoderma polysporum (c) Monascus purpureus (d) Aspergillus niger	(i) Cyclosporin-A (ii) Butyric Acid (iii) Citric Acid (iv) Blood cholesterol lowering agent

A

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

B

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

C

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

D

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

Question 73: Palette 73/123

Allen MCQ

Which of the following is put into Anaerobic sludge digester for further sewage treatment?

A

Activated sludge

B

Primary sludge

C

Floating debris

D

Effluents of primary treatment

Question 74: Palette 74/123

Allen MCQ

For the commercial and industrial production of citric acid, which of the following microbes is used?

A

Aspergillus niger

B

Lactobacillus sp.

C

Saccharomyces cerevisiae

D

Clostridium butylicum

Question 75: Palette 75/123

Allen MCQ

Match the following columns and select the correct option :-

Column-I	Column-II
(a) Dragonflies (b) Bacillus thuringiensis (c) Glomus (d) Baculoviruses	(i) Biocontrol agents of several plant pathogens (ii) Get rid of mosquitoes (iii) Narrow spectrum insecticidal applications (iv) Biocontrol agents of lepidopteran plant pests (v) Absorb phosphorus from soil

A

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

B

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

C

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

D

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

Question 76: Palette 76/123

Allen MCQ

Cyclosporin A, used as immunosuppression agent, is produced from :-

A

Monascus purpureus

B

Saccharomyces cerevisiae

C

Penicillium notatum

D

Trichoderma polysporum

Question 77: Palette 77/123

Allen Match the Columns

Match Column - I with Column - II:-

Column-I	Column-II
(a) Aspergillus niger (b) Acetobacter aceti (c) Clostridium butylicum (d) Lactobacillus	(i) Acetic Acid (ii) Lactic Acid (iii) Citric Acid (iv) Butyric Acid

A

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

B

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

C

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

D

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

Question 78: Palette 78/123

Allen MCQ

Identify the microorganism which is responsible for the production of an immune suppressive molecule cyclosporin A?

A

Clostridium butylicum

B

Aspergillus niger

C

Streptococcus cerevisiae

D

Trichoderma polysporum

Question 79: Palette 79/123

Allen MCQ

What will happen if fresh water lake gets contaminated by addition of polluted water with high BOD?

A

Amount of dissolved oxygen in the lake will decrease

B

The lake will remain unaffected

C

Number of submerged aquatic plants in the lake will increase

D

Number of aquatic animals in the lake will increase

Question 80: Palette 80/123

Allen MCQ

Select the correct statements regarding dissolved Oxygen and Biochemical Oxygen Demand.
(A) BOD is inversely related to dissolved oxygen.
(B) Low dissolved oxygen and high BOD lead to loss of aquatic life.
(C) High BOD leads to high dissolved oxygen.
(D) Both BOD and dissolved oxygen are indicator of health of a water body.
(E) Both BOD and dissolved oxygen are affected by amount of organic matter in the water body.
Choose the most appropriate answer from the options given below :

A

(A), (B), (C), (E) only

B

(A), (B), (D), (E) only

C

(A), (B), (C), (D) only

D

(B), (C), (D), (E) only

Question 81: Palette 81/123

Allen Match the Columns

Match Column-I with Column-II.

Column-I	Column-II
(a) Clostridium butylicum (b) Saccharomyces cerevisiae (c) Trichoderma polysporum (d) Streptococcus sp.	(i) Ethanol (ii) Streptokinase (iii) Butyric acid (iv) Cyclosporin-A

A

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

B

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

C

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

D

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

Question 82: Palette 82/123

Allen MCQ

The Bt toxin in genetically engineered Bt cotton kills the pest by :

A

creating pores in the midgut.

B

damaging the respiratory system

C

degenerating the nervous system

D

altering the pH of body fluids.

Question 83: Palette 83/123

Allen Match the Columns

Match Column-I with Column-II relating to microbes and their products :

Column-I	Column-II
(a) Streptococcus (b) Trichoderma polysporum (c) Monascus purpureus (d) Aspergillus niger	(i) Citric acid (ii) Clot buster (iii) Cyclosporin-A (iv) Statins

A

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

B

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

C

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

D

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

Question 84: Palette 84/123

Allen MCQ

Nutritionally curd is more suitable then milk. Which of the following reason does not support this view:-

A

It increases vitamin $B_{12}$

B

It checks disease causing microbes

C

LAB convert lactose into lactic acid

D

It provides additional proteins

Question 85: Palette 85/123

Allen MCQ

Large holes in "Swiss cheese" are due to production of large amount of $\mathrm{CO}_{2}$ by ...... bacterium:-

A

Leuconostoc mesenteroides

B

Propionibacterium sharmanii

C

Thermococcus proteus

D

Staphylococcus thermophiles

Question 86: Palette 86/123

Allen MCQ

Which of the following is not a product of distillation:-

A

Whisky

B

Brandy

C

Wine

D

Rum

Question 87: Palette 87/123

Allen MCQ

Find out odd one with reference to distillation

A

Beer

B

Wine

C

Both (1) and (2)

D

Vodka

Question 88: Palette 88/123

Allen MCQ

Which of the following bacteria was associated with discovery of penicillin

A

Streptococcus

B

Staphylococcus

C

Saccharomyces cerevisiae

D

Propionibacterium

Question 89: Palette 89/123

Allen MCQ

Full potential of penicillin as an effective antibiotic was established by:-

A

Alexander Flemming

B

Ernest Chain

C

Howard Florey

D

Both (2) and (3)

Question 90: Palette 90/123

Allen MCQ

Which of the following is "Clot buster":

A

Citric acid

B

Streptokinase

C

Cyclosporin

D

Statins

Question 91: Palette 91/123

Allen MCQ

Which of the following chemicals is used as an immunosuppressive agent in organ transplantation:-

A

Streptokinase

B

Cyclosporin - A

C

Statins

D

Citric acid

Question 92: Palette 92/123

Allen MCQ

Match the following :-

Column-I	Column-II
(a) Pectinases (b) Streptokinase (c) Cyclosporin-A (d) Statin –	(i) Blood cholesterol lowering agents (ii) Immunosuppressive agents (iii) Clot-buster (iv) Clarifying agents

A

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

B

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

C

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

D

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

Question 93: Palette 93/123

Allen MCQ

Match the following:-

Column-I	Column-II
(a) Citric acid (b) Streptokinase (c) Cyclosporin-A (d) Statins	(i) Streptococcus (ii) Aspergillus niger (iii) Aspergillus niger (iv) Aspergillus niger

A

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

B

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

C

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

D

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

Question 94: Palette 94/123

Allen MCQ

Functioning of statin is based on:-

A

Competitive inhibition

B

End product inhibition

C

Allosteric inhibition

D

Negative feedback inhibition

Question 95: Palette 95/123

Allen MCQ

The technology of biogas production was developed in India mainly due to efforts of :

A

IARI

B

KVIC

C

IPM

D

Both (1) and (2)

Question 96: Palette 96/123

Allen MCQ

Bacillus thuringiensis show their inhibitory effect on which part of the insect body:-

A

Gut

B

Respiratory tract

C

Nervous system

D

Circulatory system

Question 97: Palette 97/123

Allen MCQ

Which of the following biological agents are used for species specific, narrow spectrum insecticidal applications:-

A

Adenoviruses

B

Nucleopolyhedro viruses

C

Retroviruses

D

Trichoderma

Question 98: Palette 98/123

Allen MCQ

Which of the following is one of the advantages of application of viruses as bioinsecticides?

A

They are less effective

B

They are host specific

C

They are costly

D

They cannot be obtained easily

Question 99: Palette 99/123

Allen MCQ

In which of the following conditions use of baculoviruses is desirable?

A

When they are used as part of IPM

B

When an ecologically sensitive area is being treated

C

When beneficial insects are being conserved

D

All of the above

Question 100: Palette 100/123

Allen MCQ

Use of biofertilizer is the part of:-

A

Inorganic farming

B

Organic farming

C

Energy cropping

D

Energy plantation

Question 101: Palette 101/123

Allen MCQ

Members of which of the following fungal genus mainly participate in the mycorrhiza formation?

A

Azotobacter

B

Fusarium

C

Rhizopus

D

Glomus

Question 102: Palette 102/123

Allen MCQ

Which of the following is not an advantage of mycorrhiza?

A

Phosphorus absorption

B

Resistance to root borne pathogens

C

Nitrogen fixation

D

Tolerance to salinity and drought

Question 103: Palette 103/123

Allen MCQ

Cultivation of which of the following crop plant specially get benefitted by application of cyanobacteria?

A

Maize

B

Legumes

C

Wheat

D

Rice

Question 104: Palette 104/123

Allen MCQ

Which one of the following is being tried in India as a biofuel substitute for fossil fuels?

A

Jatropha

B

Musa

C

Aegilops

D

Azadirachta

Question 105: Palette 105/123

Allen MCQ

Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?

A

Aspergillus niger - citric acid

B

Yeast - Statins

C

Acetobacter aceti - acetic acid

D

Clostridium butylicum - lactic acid

Question 106: Palette 106/123

Allen MCQ

Read the following statement having two blanks (A and B): "A drug used for ____(A)____ patients is obtained from a species of the organism ____(B)____." The one correct option for the two blanks is:-

A

AIDS - Pseudomonas

B

Heart - Penicillium

C

Organ-transplant - Trichoderma

D

Swine flu - Monascus

Question 107: Palette 107/123

Allen MCQ

Yeast is used in the production of :-

A

Bread and beer

B

Cheese and butter

C

Citric acid and lactic acid

D

Lipase and pectinase

Question 108: Palette 108/123

Allen MCQ

A patient brought to a hospital with myocardial infarction is normally immediately given :-

A

Cyclosporin-A

B

Statins

C

Penicillin

D

Streptokinase

Question 109: Palette 109/123

Allen MCQ

Which one of the following is an example of carrying out biological control of pests/diseases using microbes?

A

Bt-Cotton to increase cotton yield

B

Lady bird beetle against aphids in mustard

C

Trichoderma sp. against certain plant pathogens.

D

Nucleopolyhedrovirus against white rust in Brassica

Question 110: Palette 110/123

Allen MCQ

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are ones categorised as:-

A

Chemosynthetic autotrophs

B

Heterotrophic bacteria

C

Cyanobacteria

D

Archaebacteria

Question 111: Palette 111/123

Allen MCQ

Monascus purpureus is a yeast used commercially in the production of :-

A

citric acid

B

blood cholesterol lowering statins

C

ethanol

D

streptokinase for removing clots from the blood vessels.

Question 112: Palette 112/123

Allen MCQ

In gobar gas, the maximum amount is that of:

A

Propane

B

Carbon dioxide

C

Butane

D

Methane

Question 113: Palette 113/123

Allen MCQ

Consider the following four statements (a-d) and select the option which includes all the correct ones only:-
(a) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc.
(b) Body weight-wise the microorganism Methylophilus methylotrophus may be able to produce several times more proteins than the cows per day.
(c) Common button mushrooms are a very rich source of vitamin C.
(d) A rice variety has been developed which is very rich in calcium.
Options :

A

Statements (b), (c) and (d)

B

Statements (a), (b)

C

Statements (c), (d)

D

Statements (a), (c) and (d)

Question 114: Palette 114/123

Allen MCQ

A good producer of citric acid is :-

A

Saccharomyces

B

Aspergillus

C

Pseudomonas

D

Clostridium

Question 115: Palette 115/123

Allen MCQ

During sewage treatment, biogases are produced which include :-

A

hydrogen sulphide, nitrogen, methane

B

methane, hydrogen sulphide, carbon dioxide

C

methane, oxygen, hydrogen sulphide

D

hydrogen sulphide, methane, sulphur dioxide

Question 116: Palette 116/123

Allen MCQ

Sewage purification is performed by :-

A

Microbes

B

Fertilisers

C

Antibiotics

D

Antiseptics

Question 117: Palette 117/123

Allen MCQ

Biological Oxygen Demand (BOD) is a measure of :-

A

Industrial wastes poured into water bodies

B

Extent to which water is polluted with organic compounds

C

Amount of carbon monooxide inseparably combined with haemoglobin

D

Amount of oxygen needed by green plants during night

Question 118: Palette 118/123

Allen MCQ

Assertion (A) : Trichoderma polysporum is an important fungus. Reason (R) : Cyclosporin-A is obtained from this fungus which is used as an immunosuppressive agent in organ transplant.

A

Both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

B

Assertion is True but the Reason is False.

C

Assertion is False but the Reason is True.

D

Both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

Question 119: Palette 119/123

Allen MCQ

Statement-I : Micro-organisms such as Lactobacillus and others commonly called lactic acid bacteria(LAB) grow in milk and convert it to curd. Statement-II : In our stomach, the LAB play very beneficial role in checking disease causing microbes.

A

Both Statement-I and Statement-II are correct.

B

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

C

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

D

Both Statement-I and Statement-II are incorrect.

Question 120: Palette 120/123

Allen MCQ

Statement-I: Methanogens grow aerobically on cellulosic material, produces large amount of methane along with CO2 and H2. Statement-II: Human beings are not able to digest cellulose.

A

Both Statement-I and Statement-II are correct.

B

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

C

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

D

Both Statement-I and Statement-II are incorrect.

Question 121: Palette 121/123

Allen MCQ

Assertion (A): Currently large number of biofertilizers are available commercially in the market and farmers use these biofertilizers in their field to replenish soil nutrients. Reason (R): Use of biofertilizers can reduce dependence on chemical fertilizers and so as environmental pollution.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is NOT the correct explanation of A

C

A is true but R is false

D

A is false but R is true

Question 122: Palette 122/123

Allen MCQ

Complete the following sentences :-are chemical substance, which are produced by some microbes and can kill or retard the growth of other microbes.

A

Antibiotics

B

Fermented Beverages

C

Fruit juice

D

Enzymes

Question 123: Palette 123/123

Allen MCQ

Find the wrongly matched pair.

A

Roquefort cheese – Ripened by a fungus

B

Swiss cheese – Has large holes that are produced by a fungus

C

Penicillin – Obtained from a mould

D

Ethanol – Produced by yeast