| 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
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| 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
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| 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
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| 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
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| 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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