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Prokaryotic Cell

Identify the ...

Question

Identify the correct statement(s) with respect to cyanobacteria.
I. Possess rigid cell wall.
II. They are chemosynthetic autotrophs.
III.Contain chlorophyll
IV. Nostoc can fix atmospheric nitrogen in specialised cells called heterocysts.
V. Most of them form blooms in polluted water bodies.

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Solution

Cyanobacteria are prokaryotic, photosynthetic autotrophs.They have a rigid cell wall and chlorophyll pigments. The presence of heterocyst in cyanobacteria helps in nitrogen fixation. Blue green algae multiply rapidly and form bloom in polluted water.

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