A free living nitrogen fixing cyanobacterium that can form symbiotic association

A Free Living Nitrogen Fixing Cyanobacterium Which Can Also Form Biology Question

A free living nitrogen fixing cyanobacterium, which can also form symbiotic association with the water fern Azolla is

Options

(a) Tolypothrix
(b) Chlorella
(c) Nostoc
(d) Anabaena

Correct Answer:

Anabaena

Explanation:

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: Diversity In Living World (342)
Subject: Biology (4113)

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