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Question
Explain the importance of various zones in a lake.
Explain
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Solution
A lake is divided into zones based on depth, distance from shore and penetration of light.
Zones of a lake
| Zone | Position | Importance |
|---|---|---|
| Littoral | Shallow area near shore | Supports rooted vegetation that photosynthesises |
| Limnetic | Open, well-lit water beyond littoral | Rich in phytoplankton, zooplankton and fish |
| Profundal | Deep, dark zone below limnetic | No photosynthesis; bacteria decompose dead debris |
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Chapter 17: Organisms and Populations - EXERCISES [Page 962]
