What is the importance of Cyanobacteria?

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(D) Cyanobacteria are significant for several reasons:$1$. Nitrogen Fixation: Many cyanobacteria,such as $Anabaena$ and $Nostoc$,possess specialized c

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All of the above.

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(D) Cyanobacteria are significant for several reasons:$1$. Nitrogen Fixation: Many cyanobacteria,such as $Anabaena$ and $Nostoc$,possess specialized cells called heterocysts that fix atmospheric nitrogen into ammonia,enriching soil fertility.$2$. Environmental Conservation: They help in the prevention of soil erosion and contribute to soil conservation by forming crusts on the soil surface.$3$. Nutritional Value: Species like $Spirulina$ are widely used as protein-rich dietary supplements for humans due to their high nutritional content.

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