Which of the following is incorrect about Cynobacteria?

Which of the following is incorrect about Cynobacteria?
  1. They are photoautotrophs
  2. They lack heterocysts
  3. They often form blooms in polluted water bodies
  4. They have chlorophyll-a similar to green plants

Solution

The cyanobacteria or blue-green algae (BGA) have chlorophyll-a similar to green plants and are photosynthetic autotrophs. The BGA are unicellular, colonial or filamentous, freshwater, marine or terrestrial algae. The colonies are generally surrounded by a gelatinous sheath. They often form blooms in polluted water bodies. Some of these organisms can fix atmospheric nitrogen in a specialised cells called heterocysts.

Asked in: NEET 2020 (Phase 2)

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