Question

What is the correct answer?​

Answer 1

ANSWER..

THE ABOVE DIAGRAM IS OF NOSTOC.

▶The label A is Heterocyst.

▶▶Heterocyst is a specialized cell found in certain types of cyanobacteria.

▶▶heterocysts are sites of nitrogen fixation.

▶▶The heterocysts function as the sites for nitrogen fixation under aerobic conditions.

THE CORRECT OPTION IS (A).

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