Home Biology The Living World Previous Year Questions Which of the following is incorrect about Cy…
Biology The Living World Previous Year Questions Single Correct MCQ
Published on: August 12, 2026

Which of the following is incorrect about Cynobacteria?

A
They are photoautotrophs
B
They lack heterocysts
C
They often form blooms in polluted water bodies
D
They have chlorophyll A similar to green plants

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Text Solution

Verified by Experts
The correct answer is:
B

This statement is incorrect because many cyanobacteria (e.g., Nostoc, Anabaena) do have heterocysts, which are specialized cells for nitrogen fixation.

Other statements are correct:

They are photoautotrophs

They form blooms in polluted water

They have chlorophyll a like green plants.

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