How does Azolla (a pteridophyte) increase ric | vedclass

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(C) $Azolla$ is a small aquatic fern that maintains a symbiotic relationship with the nitrogen-fixing cyanobacterium $Anabaena$ $azollae$. This cyanob

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$Anabaena$

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(C) $Azolla$ is a small aquatic fern that maintains a symbiotic relationship with the nitrogen-fixing cyanobacterium $Anabaena$ $azollae$. This cyanobacterium resides in the leaf cavities of $Azolla$. It fixes atmospheric nitrogen into ammonia,which is then utilized by the rice plants as a natural biofertilizer. Consequently,the presence of $Azolla$ in rice fields significantly enhances the nitrogen content of the soil,leading to increased rice production.

How does $Azolla$ (a pteridophyte) increase rice production?

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