Which of the following is a free-living nitro | vedclass

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(C) $Azotobacter$ is a free-living,aerobic,nitrogen-fixing bacterium found in the soil.$Rhizobium$ is a symbiotic nitrogen-fixing bacterium that forms

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Azotobacter

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(C) $Azotobacter$ is a free-living,aerobic,nitrogen-fixing bacterium found in the soil.$Rhizobium$ is a symbiotic nitrogen-fixing bacterium that forms root nodules in leguminous plants.$Pseudomonas$ and $Nitrosomonas$ are involved in the nitrogen cycle (denitrification and nitrification,respectively) but are not primarily known as free-living nitrogen fixers in the same context as $Azotobacter$.

Which of the following is a free-living nitrogen-fixing bacterium present in the soil?

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