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Microbes in Agriculture

A free living...

Question

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

A

Nostoc

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B

Anabaena

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C

Tolypothrix

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D

Chlorella

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Solution

The correct option is B Anabaena
Azolla pinnata has Anabaena azollae in its fronts. It is often inoculated to rice fields for nitrogen fixation

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