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Biological Classification

332 Questions Start Allen Test
All Exams Allen
Q176 Allen PYQ MCQ
After karyogamy followed by meiosis, spores are produced exogenously in:
A.
Neurospora
B.
Alternaria
C.
Agaricus
D.
Saccharomyces
Q177 Allen PYQ MCQ
Oxygen is not produced during photosynthesis by: A) Green sulphur bacteria B) Nostoc C) Cycas D) Chara
Q178 Allen PYQ MCQ
Which of the following organisms are known as chief producers in the oceans ?
A.
Dinoflagellates
B.
Diatoms
C.
Cyanobacteria
D.
Euglenoids
Q179 Allen PYQ 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.
Q180 Allen PYQ 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.
Q181 Allen PYQ MCQ
Thiobacillus is a group of bacteria helpful in carrying out:
A.
Nitrogen fixation
B.
Chemoautotrophic fixation
C.
Nitrification
D.
Denitrification
Q182 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-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
Q183 Allen PYQ Match the Columns
Match the organisms in column-I with habitats in column-II.
Column-IColumn-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)
Q184 Allen PYQ 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
Q185 Allen PYQ 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.
Q186 Allen PYQ MCQ
Which of the following bacteria reduce nitrate in soil into nitrogen ?
A.
Nitrobacter
B.
Nitrococcus
C.
Thiobacillus
D.
Nitrosomonas
Q187 Allen PYQ 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
Q188 Allen PYQ 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.
Q189 Allen PYQ 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.
Q190 Allen PYQ 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.
Q191 Allen PYQ MCQ
Inclusion bodies of blue- green, purple and green photosynthetic bacteria are :-
A.
Contractile vacuoles
B.
Gas vacuoles
C.
Centrioles
D.
Microtubules
Q192 Allen PYQ 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.
Q193 Allen PYQ 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.
Q194 Allen PYQ 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.
Q195 Allen PYQ 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.
Q196 Allen PYQ 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
Q197 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-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
Q198 Allen PYQ 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
Q199 Allen PYQ 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
Q200 Allen PYQ Match the Columns
Match Column-I with Column-II.
Column-IColumn-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