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Azolla is used as biofertilizer because ...

Azolla is used as biofertilizer because it

A

Multiplies very fast to produce massive biomass

B

Has association of nitrogen - fixing Rhizobium

C

Has association of nitrogen - fixing cyanobacteria

D

Has association of mycorrhiza

Text Solution

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The correct Answer is:
C
Azolla is a pteridophyte and used as a biofertilizer because it has association with nitrogen fixing cyanobacteria Anabaena azollae.
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