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

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23/08/2021 9:16 pm

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Shivani siva

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

(1) Nostoc

(2) Tolypothrix

(3) Anabaena

(4) Chlorella

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23/08/2021 9:16 pm

Deepak Rock

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Correct answer: (3) Anabaena

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