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Which of the following is free-living ae...

Which of the following is free-living aerobic non-photosynthetic nitrogen fixing bacterium

A

Rhizobium

B

Azotobacter

C

Azospirillum

D

Nostoc

Text Solution

Verified by Experts

The correct Answer is:
B
Azotobacter is a free living, aerobic non-photosynthetic, i.e., sapropytic bacteria.it retains the capability of fixing atmospheric nitrogen, i.e., fixation of atmospheric dinitrogen into ammonia.
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