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Question

Azolla pinata has been found to be an important biofertiliser for paddy crops. This quality is due to the presence of :

A
N2 fixing bacteria
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B
N2 fixing cyanobacteria
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C
Mycorrhizae
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D
All of these
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Solution

The correct option is B N2 fixing cyanobacteria
Azolla pinata has been found to be an important biofertiliser for paddy crops. This quality is due to the presence of a N2 fixing cyanobacteria named Anabaena.
So, the correct option is 'N2 fixing cyanobacteria'

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