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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 gives correct matching of a disease with its causative organism and mode
- A typical fat molecule is made up of
- Flowers are unisexual in:
- Excretory system of Ascaris lumbricoides is made up of
- Frog is
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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