E-PolyLearning

1. The association which involves the exchange of nutrients between two species is referred to as ______________
a. mutualism
b. syntrophism
c. commensalism
d. antagonism
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Answer: (b).syntrophism

2. The degradation of complex molecules in soil by fungi for utilization by bacteria is an example of which type of association?
a. Neutralism
b. Mutualism
c. Commensalism
d. Antagonism
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Answer: (c).Commensalism

3. Which of the following types of association is present among Staphylococcus aureus and Aspergillus terreous?
a. antagonism
b. mutualism
c. parasitism
d. commensalism
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Answer: (a).antagonism

4. Lytic enzymes which destroy are secreted by which of the following microorganism?
a. fungi
b. algae
c. staphylococcus
d. myxobacteria
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Answer: (d).myxobacteria

5. Fungi produces which of the following inhibitory toxic product?
a. cyanide
b. fatty acids
c. methane
d. sulphides
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Answer: (a).cyanide

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