Question

Which of the following zones of a lake is not habitat for snails, slugs and micro-organisms?

• A. Littoral
• B. Limnetic
• C. Benthic
• D. Profundal

Answer 1

Answer: (A), (B), (D)

The correct options are
A Littoral
B Limnetic
D Profundal

A. Littoral zone adjoins the shore and It extends down to a point where rate of photosynthesis equals the rate of respiration, which is called light compensation point.

B. Limnetic zone is the water beyond the littoral zone. This zone derives oxygen from the photosynthetic activity of phytoplanktons.

C. Bentic zone is lowermost or bottom most zone of a water body and includes the sediment surface.

D. Profundal zone is the bottom area of pond where respiration is greater than production.

Snails, slugs and microorganisms are found in the benthic zone of a lake.

So, the correct answer is option A, B and D.