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Q. No.Chemosynthetic bacteria:
| A: | oxidise various inorganic substances such as nitrates, nitrites and ammonia and use the released energy for their ATP production. |
| B: | play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur. |
| 1. | Only A is correct |
| 2. | Only B is correct |
| 3. | Both A and B are correct |
| 4. | Both A and B are incorrect |
Subtopic: Â Kingdom Monera: Blue Green Algae |Â Eubacteria |
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Level 1: 80%+
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Some cyanobacteria possess specialized cells called heterocysts, which are sites of nitrogen fixation. Examples of such a cyanobacterium include:
| I: | Anabaena |
| II: | Oscillatoria |
| III: | Nostoc |
| 1. | Only I and II | 2. | Only II and III |
| 3. | Only III | 4. | Only I and III |
Subtopic: Â Eubacteria |
 85%
Level 1: 80%+
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Q. No.
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