As a group the most extensive metabolic diversity is shown by:
1. | Bacteria | 2. | Protista |
3. | Fungi | 4. | Animals |
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Methanogens are commonly present in:
1. Alimentary canal of the lower invertebrates
2. Symbiotic relationships with xerophytic plants
3. Gut of ruminant animals
4. Close associations with corals
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Chemosynthestic autotrophic bacteria:
I. | Produce ATP by oxidizing inorganic substances |
II. | Play a great role in recycling nutrients like nitrogen, phosphorus, iron and sulfur |
1. | Both I and II are correct | 2. | Only I is correct |
3. | Only II is correct | 4. | Both I and II are incorrect |
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Identify the incorrect statement regarding true bacteria?
1. | As a group, they exhibit maximum metabolic diversity. |
2. | Chemosynthetic autotrophic bacteria play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur. |
3. | Heterotrophic bacteria are the most abundant in nature. |
4. | Bacteria reproduce mainly by fission but sometimes under favourable conditions, they produce spores. |
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