Question

Heterocysts can be differentiated from other vegetative cells of nostoc as former lack (a) PS l (b) PS II (c) Nitrogenase enzyme​

Answer 1

A heterocyst is a differentiated cyanobacterial cell that carries out nitrogen fixation. The heterocysts function as the sites for nitrogen fixation under aerobic conditions. They are formed in response to a lack of fixed nitrogen (NH4 or NO3).

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