state the function of heterocyst in nostoc
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Ram ram mithe
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Heterocyst. Heterocysts or heterocytes are specialized nitrogen-fixing cells formed during nitrogen starvation by some filamentous cyanobacteria, such as Nostoc punctiforme, Cylindrospermum stagnale, and Anabaena sphaerica. ... Nitrogenase is inactivated by oxygen, so the heterocyst must create a microanaerobic environment ...
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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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