One of the free-living,anaerobic nitrogen-fix | vedclass

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(B) The correct answer is $B$. Many free-living bacteria and blue-green algae are capable of fixing atmospheric nitrogen. $Rhodospirillum$ is a free-l

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Rhodospirillum

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(B) The correct answer is $B$. Many free-living bacteria and blue-green algae are capable of fixing atmospheric nitrogen. $Rhodospirillum$ is a free-living,photosynthetic,anaerobic,nitrogen-fixing,non-sulphur bacterium. It is capable of synthesizing its organic food in the presence of light and in the absence of $O_2$ through a process known as bacterial photosynthesis. $Beijernickia$ and $Azotobacter$ are free-living but aerobic nitrogen-fixing bacteria. $Rhizobium$ is a symbiotic nitrogen-fixing bacterium.

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

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