Question

"Heterocyst " what is this

Answer 1

Answer:

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Explanation:

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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Answer 2

It is the large-sized,pale coloured,thick_walled cell which occurs in terminal,intercalary or lateral position in filamentous cyanobacteria eg:NOSTOC.it has enzyme nitrogenase. It is specialised to perform nitrogen fixation.