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A free living nitrogen fixing cyanobacterium which also forms symbiotic association with Azolla is
Options
(a) Anabaena
(b) Nostoc
(c) Chlorella
(d) Tolypothrix
Correct Answer:
Anabaena
Explanation:
Anabaena azollae resides in the leaf cavities of the fern Anabaena. It fixes nitrogen. A part of the fixed nitrogen is excreted in the cavities and becomes available to the fern. The decaying fern plants release the same for utilization of the rice plants.
Anabaena is a genus of filamentous cyanobacteria that exist as plankton. They are known for nitrogen-fixing abilities, and they form symbiotic relationships with certain plants, such as the mosquito fern.
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Topics: Microbes in Human Welfare
(63)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An insecticide extracted from the leaves of neem is
- Perigynous flowers are found in
- Clones of plants can be produced by
- Pollinia are present in which plant family?
- Thermostable enzymes “Taq and Pfu” isolated from thermophilic bacteria are
Topics: Microbes in Human Welfare (63)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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