Which of the following is not a symbiotic nit | vedclass

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(A) $Rhizobium$ and $Frankia$ are well-known symbiotic nitrogen-fixing bacteria. $Rhizobium$ forms nodules in the roots of leguminous plants,while $Fr

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Clostridium

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(A) $Rhizobium$ and $Frankia$ are well-known symbiotic nitrogen-fixing bacteria. $Rhizobium$ forms nodules in the roots of leguminous plants,while $Frankia$ forms symbiotic associations with the root nodules of non-leguminous plants like $Alnus$. $Clostridium$ is a free-living,anaerobic,nitrogen-fixing bacterium. $Mycobacterium$ is not involved in nitrogen fixation. Therefore,among the given options,$Clostridium$ is the correct answer as it is free-living,not symbiotic.

Which of the following is not a symbiotic nitrogen-fixing bacterium?

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