Prokaryotic,autotrophic,nitrogen-fixing symbi | vedclass

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(A) The question refers to a prokaryotic,autotrophic,nitrogen-fixing symbiont. In $Cycas$ (a gymnosperm),specialized roots called coralloid roots are

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Cycas

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(A) The question refers to a prokaryotic,autotrophic,nitrogen-fixing symbiont. In $Cycas$ (a gymnosperm),specialized roots called coralloid roots are associated with nitrogen-fixing cyanobacteria (like $Anabaena$ or $Nostoc$),which are prokaryotic and autotrophic. $Cicer$ (chickpea) and $Pisum$ (pea) form symbiotic relationships with $Rhizobium$,which is a prokaryotic,heterotrophic bacterium. $Alnus$ forms a symbiotic relationship with $Frankia$,which is a prokaryotic,heterotrophic actinomycete. Therefore,the correct answer is $Cycas$.

Prokaryotic,autotrophic,nitrogen-fixing symbionts are found in ..........

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