Azolla which fixes nitrogen in rice field is__________________?
Correct answer: C. Ferm
- A. Bacteria
- B. Fungi
- C. Ferm
- D. None of the above
Explanation
Azolla is a small aquatic fern that houses nitrogen-fixing Anabaena in its leaf cavities. The fern and its cyanobacterial partner enrich flooded rice fields with nitrogen.
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