Q. With reference to Phytoplankton, consider the following statements:
1.Phytoplankton include bacteria, protists, and single-celled plants.
2.Phytoplankton are confined only to tropical and temperate oceans, being absent in polar waters.
3.Phytoplankton form the base of aquatic food chains and serve as the “pasture grounds” of oceans.
Which of the statements given above is/are correct?
Answer: B
Notes:
Explanation:
- Phytoplankton include bacteria (cyanobacteria), protists (dinoflagellates), and single-celled plants (diatoms, coccolithophores).
- Phytoplankton occur throughout the lighted regions of all seas and oceans, including polar waters.
- Phytoplankton huge biomass forms the basic “pasture ground” of the marine food chain.
Source: Environment (N.C.E.R.T)
