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Quiz 8
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Q.1
How many of the following statements are false? (i) Euglena is a protistan organism which is a link between animals and plants. (ii) Both contractile vacuole and pseudopodia are found exclusively in protozoans. (iii) Classification of protozoans is mainly based on both size and locomotory structure. (iv) Locomotory organs of Sporozoans are pseudopodia.
0%
a) 1
0%
b) 2
0%
c) 3
0%
d) 4
Explanation
Answer:(c)
Q.2
How many of the following statements are true: (i) Zoospores are strictly non-motile. (ii) Rhizopus exhibit saprophytic mode of nutrition. (iii) Saccharomyces is an ascomycetes which lack mycelium. (iv) Usually mycobiont in lichens is the member of Phycomycetes.
0%
a) 1
0%
b) 2
0%
c) 3
0%
d) 4
Explanation
Answer:(c)
Q.3
Observe the following statements: (i) Both bacteria and fungi are cosmopolitan in occur. (ii) Both diatoms and Sporozoans are non-motile. (iii) Mycoplasma do not have a cell wall. Of the above statements:
0%
a) All statements are true.
0%
b) All statements are false.
0%
c) Only (i) and (ii) are false.
0%
d) Only (ii) and (iii) are true.
Explanation
Answer:(a)
Q.4
Consider the following statements: (i) Dinoflagellates and flagellated protozoans are strictly marine organisms. (ii) Trichoderma reproduces only by sexual method. (iii) In Ustilago, sexual reproduction takes place by Ascospores. (iv) Nuclear membrane is absent in Nostoc and mushrooms.
0%
a) (i) and (ii) are true but (iii) and (iv) are false.
0%
b) (ii) and (iii) are false but (i) and (iv) are true.
0%
c) (i), (iii) and (iv) are false.
0%
d) (i), (ii), (iii) and (iv) are false.
Explanation
Answer:(d)
Q.5
Consider the following statements: (i) Dikaryotisation take place in Neurospora, Albugo and Lycoperdon. (ii) RNA of viroids is single stranded and has low molecular weight. (iii) Artificial systems gave equal weightage to vegetative and sexual characters.
0%
a) (ii) and (iii) are true.
0%
b) (i) and (iii) are true.
0%
c) All statements are false.
0%
d) All statements are true.
Explanation
Answer:(a)
Q.6
Bivalved siliceous shell of frustules occurs in:
0%
a) Diatoms.
0%
b) Dinoflagellates.
0%
c) Zooflagellates
0%
d) Archaebacteria.
Explanation
Answer:(a)
Q.7
Auxospores and Hormogonia are formed respectively in:
0%
a) Some diatoms and several cyanobacteria.
0%
b) Some cyanobacteria and several diatoms.
0%
c) Several cyanobacteria and some diatoms.
0%
d) Several diatoms and some cyanobacteria.
Explanation
Answer:(d)
Q.8
In endomycorrhiza, the fungus is generally:
0%
a) Ascomycetes.
0%
b) Zygomycetes.
0%
c) Basidiomycetes.
0%
d) Deuteromycetes.
Explanation
Answer:(b)
Q.9
In Albugo, sexual reproduction results in the formation of:
0%
a) Zygospores.
0%
b) Ascospores.
0%
c) Oospores.
0%
d) Basidiospores.
Explanation
Answer:(c)
Q.10
Diatoms stay afloat due to:
0%
a) Pseudopodia.
0%
b) Flagella.
0%
c) Stored lipids.
0%
d) False feet.
Explanation
Answer:(c)
Q.11
Match the following:
Column A
Column B
a. Diatomaceous earth
Red tide
b. Gonyaulux
Blue green algae
c. Mixotrophic nutrition
Noctiluca
d. Heterocyst
Euglena
e. Bioluminescence
Keiselghur
0%
a) a → 1; b → 5; c → 2; d → 3; d → 4
0%
b) a → 5; b → 1; c → 3; d → 2; d → 4
0%
c) a → 3; b → 5; c → 4; d → 2; d → 1
0%
d) a → 5; b → 1; c → 4; d → 2; d → 3
Explanation
Answer:(d)
Q.12
Assertion: Cyanobacteria are photosynthetic blue – green algae with prokaryotic structure. Reason: They are green due to the presence of chlorophyll.
0%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
0%
b) Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
0%
c) Assertion is true but Reason is false.
0%
d) Both Assertion and Reason are false.
Explanation
Answer:(b)
Q.13
Assertion: Diatoms are the chief producers in ocean. Reason: Diatomaceous earth is used in filtration of oils and syrups.
0%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
0%
b) Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
0%
c) Assertion is true but Reason is false.
0%
d) Both Assertion and Reason are false.
Explanation
Answer:(b)
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