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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

Nostoc

D

Azospirillum

Text Solution

Verified by Experts

The correct Answer is:
B
Azotobacter are aerobic free living soil microbes which play an important role in the nitrogen cycle, binding atmospheric nitrogen and releasing it in the form of ammonium ions into soil.
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