Which of the following aquatic pteridophytes | vedclass

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(A) $Azolla$ is an aquatic pteridophyte that forms a symbiotic relationship with the cyanobacterium $Anabaena$ $azollae$.This cyanobacterium resides i

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Azolla

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(A) $Azolla$ is an aquatic pteridophyte that forms a symbiotic relationship with the cyanobacterium $Anabaena$ $azollae$.This cyanobacterium resides in the leaf cavities of $Azolla$ and is capable of fixing atmospheric nitrogen.Therefore,$Azolla$ is widely used as a biofertilizer in rice fields to enhance nitrogen availability.

Which of the following aquatic pteridophytes is responsible for nitrogen fixation?

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