Assertion a : Azolla is used as biofertilzer in rice fields
Reason r: Azolla contains nitrogen fixing cyanobacteria in its root nodules

A symbiotic nitrogen fixing bacterium found in root nodules.

Azolla is useful as biofertilizer in rice fields mainly by virtue of its

Azolla is useful as biofertilizer in rice fields mainly by virtue of its

Fill in the blanks: ………….plants has nitrogen - fixing bacteria in the root nodules.

Assertion: Azolla pinnata is used as biofertiliser in rice cultivation. Reason: Azolla performs nitrogen fixation with the help of symbiotic bacteria Bacillus sp.

Assertion. Azolla pinnata is used as a biofertilizer in rice cultivation. Reason. Azolla performs dinitrogen fixation with the help of symbotic bacterium Bacillus sp.

Nitrogen-fixing enzyme found in root nodules is