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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
- Which one of the following is the most widely accepted method of contraception
- Which elements are essential for the photophosphorylation
- The common nitrogen fixer in paddy fields is
- Karyology is the study of
- In a longitudinal section of a root,starting from the tip upward the four zones
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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