"The open water zone away from shore to the depth of affective light penetration and occupied by phylopplankion Iike green algae euglena etc." which of the following regions of fresh water has all these properties?
Correct answer: B. Limnetic
- A. Littoral
- B. Limnetic
- C. Profundal
- D. Both "a" and "b"
Explanation
It is the open water zone away from the shore and it extends up to the effective light penetration level. The limnetic zone is well-lighted (like the littoral zone) and is dominated by plankton, both phytoplankton and zooplankton. Plankton are small organisms that play a crucial role in the food chain.
This question appeared on the ETEA MDCAT 2008 paper, which you can sit online with every answer explained.
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