A prokaryotic autotrophic nitrogen-fixing sym | vedclass

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(B) : $Cycas$ forms a symbiotic association with autotrophic nitrogen-fixing cyanobacteria (such as $Anabaena$ or $Nostoc$).$Cycas$ provides fixed car

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Cycas

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(B) : $Cycas$ forms a symbiotic association with autotrophic nitrogen-fixing cyanobacteria (such as $Anabaena$ or $Nostoc$).$Cycas$ provides fixed carbon and a stable environment to the cyanobacteria in exchange for fixed nitrogen.These cyanobacteria are endosymbionts and live within the specialized roots of $Cycas$.In addition to normal roots,$Cycas$ develops specialized symbiotic organs called coralloid roots,which house these cyanobacteria.

$A$ prokaryotic autotrophic nitrogen-fixing symbiont is found in

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