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Which of the following is incorrect about Cyanobacteria?
A
They have chlorophyll A similar to green plants
B
They are photoautotrophs
C
They lack heterocysts
D
They often form blooms in polluted water bodies
Detailed Solution
Cyanobacteria (e.g. Nostoc, Anabaena) possess specialised cells called heterocysts, which are the sites of nitrogen fixation — so the statement that they lack heterocysts is incorrect.