Name two nitrogen fixing algae.

In Whittaker's classification Archaebacteria and nitrogen fixing algae are placed under

What is the name of nitrogen fixing bacterium found in the root nodules of legumes ?

Which of the following is nitrogen fixing algae

A legume having symbiotic association with two nitrogen fixing bacteria (Rhizobium and Aerospirillum ) is

Roots associated with nitrogen fixing bacteria are

Name one aerobic and one anaerobic nitrogen fixing bacteria.

Bacterial nitrogen fixation by nitrogen fixing bacteria is

An anaerobic nitrogen fixing bacterium is

Nodules with nitrogen fixing bacteria are present in