Free-living nitrogen-fixing aerobic microbes | vedclass

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Question

(A) Nitrogen fixation is the process of converting atmospheric nitrogen into ammonia.Free-living nitrogen-fixing microbes can be aerobic or anaerobic.

Vedclass · Accepted Answer

Azotobacter and Beijerinckia

Vedclass · Answer

(A) Nitrogen fixation is the process of converting atmospheric nitrogen into ammonia.Free-living nitrogen-fixing microbes can be aerobic or anaerobic.$Azotobacter$ and $Beijerinckia$ are well-known examples of free-living,aerobic nitrogen-fixing bacteria.$Rhodospirillum$ is an anaerobic nitrogen-fixing bacterium.$Anabaena$ and $Nostoc$ are free-living or symbiotic cyanobacteria that fix nitrogen,but they are not strictly classified as aerobic in the same context as $Azotobacter$ for this specific question.Therefore,the correct option is $A$.

Free-living nitrogen-fixing aerobic microbes are ...... and .......

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