In Aulosira,Tolypothrix and Nostoc, . . . . . | vedclass

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(D) In cyanobacteria like $Aulosira$,$Tolypothrix$,and $Nostoc$,specialized cells called $heterocysts$ are responsible for nitrogen fixation.These cel

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heterocysts

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(D) In cyanobacteria like $Aulosira$,$Tolypothrix$,and $Nostoc$,specialized cells called $heterocysts$ are responsible for nitrogen fixation.These cells have thick walls and an anaerobic environment,which protects the enzyme $nitrogenase$ from oxygen,allowing it to function efficiently in the conversion of atmospheric nitrogen into ammonia.

In $Aulosira$,$Tolypothrix$ and $Nostoc$, . . . . . . are the sites for Nitrogen fixation.

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