I. Unicellular. Colonial, filamentous, marine or terrestrial forms    II. The colonial , f
Channel: Doubtnut
Date: 2021-11-02

I. Unicellular. Colonial, filamentous, marine or terrestrial forms      II. The colonial , filamentous, marine or terrestrial form  III. Some can fix atmospheric nitrogen in specialised cells called heterocysts   IV. They often form blooms in water bodies. these above characters are seen in