In unfavorable environment hormogonium of algae is covered by thick wall to form hormocyst. Under favorable conditions, hormocysts germinate and give rise to new algae. Eg Nostoc, Oscillatoria etc.
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In unfavorable environment hormogonium of algae is covered by thick wall to form hormocyst. Under favorable conditions, hormocysts germinate and give rise to new algae. Eg Nostoc, Oscillatoria etc.