Identify the free-living N_2-fixing bacteria. | vedclass

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(C) $Azospirillum$ and $Azotobacter$ are well-known examples of free-living nitrogen-fixing bacteria.$Rhizobium$ is a symbiotic nitrogen-fixing bacter

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Azospirillum

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(C) $Azospirillum$ and $Azotobacter$ are well-known examples of free-living nitrogen-fixing bacteria.$Rhizobium$ is a symbiotic nitrogen-fixing bacterium found in the root nodules of leguminous plants.$Bacillus thuringiensis$ is used as a bio-insecticide.$Staphylococci$ are pathogenic bacteria.Therefore,the correct option is $C$.

Identify the free-living $N_2$-fixing bacteria.

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