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. The bottom area where production is less than respiration in a pond ecosystem is termed as1 MarksChoose Option AA. Profundal zoneChoose Option BB. Tidal zoneChoose Option CC. Benthic zoneChoose Option DD. Limnetic zone

Question

. The bottom area where production is less than respiration in a pond ecosystem is termed as1 MarksChoose Option AA. Profundal zoneChoose Option BB. Tidal zoneChoose Option CC. Benthic zoneChoose Option DD. Limnetic zone

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Solution

The correct answer is Option A. Profundal zone.

Here's why:

In a pond ecosystem, the profundal zone is the deep water zone that is below the limnetic zone. It is typically the area where sunlight does not penetrate, thus, making it impossible for photosynthesis to occur. As a result, production (photosynthesis) is less than respiration in this zone.

The other zones mentioned have different characteristics:

  • The tidal zone (Option B) is not applicable to a pond ecosystem as it refers to the area that is above water at low tide and under water at high tide, typically in coastal environments.
  • The benthic zone (Option C) refers to the lowest level of a body of water, including the sediment surface and some sub-surface layers. Organisms living in this zone are called benthos.
  • The limnetic zone (Option D) is the open water zone where light penetrates allowing photosynthesis, thus production is typically higher than respiration.

This problem has been solved

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