Heterocyst of Nostoc Structure and Function


Nostoc is a Colonial, filamentous algae seen as mucilaginous balls that belongs to the class cyanophyceae (Blue green algae)
Heterocyst of Nostoc Structure and Function

    Heterocysts are Large sized, colourless, spherical, thick walled cells present in the filaments of blue green algae like Nostoc
     Position intercalary or terminal
    A prominent granule is present at each pole of the heterocyst called polar nodule.
Functions
-Main site of Nitrogen fixation
-Helps in vegetative reproduction; function as “point of breakage” of filaments; sometimes germinate into new filament
-Stimulate production of akinetes
-Serves as storage organs
More on Nostoc: Nostoc Taxonomic position, Habitat and Cell structure
                           Reproduction in Nostoc
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