NTA Abhyas NEET2020BotanyBiological ClassificationPractice
Which of the following statements is true about cyanobacteria?
Options
- AIt is found in fresh water only.
- BIt may be unicellular, colonial or filamentous.
- CThey often form bloom in non-polluted fresh water bodies.
- DColonies are not surrounded by gelatinous sheath.
Correct answer
B. It may be unicellular, colonial or filamentous.
Step-by-step solution
Cyanobacteria are found in freshwater, brackish water, and moist soil. They often form bloom in the polluted water body. Colonies of cyanobacteria are surrounded by gelatinous or mucilaginous sheath due to which they become slippery. They may be unicellular, colonial, or filamentous.