NEET Biology question

Which one is the free-living, anaerobic nitrogen fixer?

(A)Beijerinckia
(B)RhodospirillumCorrect
(C)Rhizobium
(D)Azotobacter

Answer: (B)

Solution

*Rhodospirillum* is a free-living, anaerobic, photosynthetic bacterium capable of nitrogen fixation. *Beijerinckia* and *Azotobacter* are free-living but aerobic

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Question ID VK-087662