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Question

Choose the correct combination of labelling of the zones in water in a lake.
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A
A- Limnetic zone, B- Profundal zone, C- Littoral zone, D- Benthic zone
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B
A- Littoral zone, B- Benthic zone, C- Profundal zone, D- Limnetic zone
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C
A- Littoral zone, B- Limnetic zone, C- Profundal zone, D- Benthic zone
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D
A- Limnetic zone, B- Littoral zone, C- Benthic zone, D- Profundal zone
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E
A- Littoral zone, B- Profundal zone, C- Benthic zone, D- Limnetic zone
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Solution

The correct option is E A- Littoral zone, B- Limnetic zone, C- Profundal zone, D- Benthic zone
Natural resources are the dwelling places of several living organisms. Water bodies such as lakes are divided into different zone which contains several biological species according to their need for survival. The littoral zone is the near shore area, where sunlight penetrates all the way to the sediment and allows aquatic plants to grow. The limnetic zone is the open water area, where light does not generally penetrate all the way to the bottom. The bottom sediment, known as the benthic zone, has a surface layer abundant with organisms. This upper layer of sediments may be mixed by the activity of the benthic organisms, that live there, often to a depth of 2 to 5 cm in rich organic sediments. Thus, the correct answer is option C.


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