NTA Abhyas NEET2020BotanyBiological ClassificationPractice
Which of the following statement is correct?
Options
- AAll bacteria are heterotrophic
- BBacteria are either heterotrophic or chemoautotrophic
- CBacteria are either heterotrophic, chemoautotrophic or photoautotrophic
- DBacteria are either chemoautotrophic or photoautotrophic
Correct answer
C. Bacteria are either heterotrophic, chemoautotrophic or photoautotrophic
Step-by-step solution
Bacteria (Greek word "bacterion" meaning small stick) belong to the kingdom Monera, they are microscopic organisms mostly ranging between 1-5 μ m . They are autotrophic as well as heterotrophic. Autotrophic bacteria can derive their nutrition either through sunlight (photoautotrophic) or through certain chemicals (chemoautotrophic). Heterotrophic bacteria can derive their nutrition from decaying matter (decomposer) or they may take nutrition from host (parasitic). Bacteria show great diversity in their mode of nutr