One of the free-living, anaerobic nitrogen – fixer is:

One of the free-living, anaerobic nitrogen – fixer is:

Options

(a) Beijiernickia
(b) Rhodospirillum
(c) Rhizobium
(d) Azotobacter

Correct Answer:

Rhodospirillum

Explanation:

Rhodospirillum is a free-living, anaerobic nitrogen fixer bacteria. It can synthesize its food in presence of light under anaerobic condition.

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