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

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(B) $Azotobacter$ is a free-living nitrogen-fixing bacterium that lives in the soil and fixes atmospheric nitrogen. $VAM$ (Vesicular-Arbuscular Mycorr

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$Azotobacter$

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(B) $Azotobacter$ is a free-living nitrogen-fixing bacterium that lives in the soil and fixes atmospheric nitrogen. $VAM$ (Vesicular-Arbuscular Mycorrhiza) is a symbiotic fungus. $Anabaena$ is a cyanobacterium that can be free-living or symbiotic (e.g.,in $Azolla$). $Rhizobium$ is a symbiotic bacterium that forms nodules in the roots of leguminous plants. Therefore,$Azotobacter$ is the correct example of a free-living biofertilizer.

Which of the following is a free-living biofertilizer?

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