NEET Previous Year Question
Which of the following is incorrect about Cyanobacteria?
Topic: NEET PYQ
Answer: A. Full step-by-step solution below.
- AThey lack heterocysts
- BThey often form blooms in polluted water bodies
- CThey have chlorophyll 'a ' similar to green plants
- DThey are photoautotrophs
Correct answer: A
Solution
(a) Cyanobacteria (also referred to as blue-green algae) have chlorophyll a similar to green plants and are photosynthetic autotrophs. Some of these organisms can fix atmospheric nitrogen in specialised cells called heterocysts, e.g., Nostoc and AnabaenaMore Biological Classification PYQs
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