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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
- In Krebs cycle OAA accepts acetyl CoA to form
- The first action spectrum of photosynthesis which was described by Engelmann
- The period of pregnancy is referred as
- Acting binding sites are located on
- Fragrant flowers with well-developed nectaries are adapted for
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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