Q. Which of the following statements about oligotrophic and eutrophic lakes is/are correct?
1.Oligotrophic lakes are deeper, have better water quality, and support more plant and animal species than eutrophic lakes.
2.Eutrophic lakes are characterized by high nutrient flux but low oxygen levels in the bottom layer.
Select the correct answer using the code given below:

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation:

  • Oligotrophic lakes are deeper, have good water quality, and contain many plant and animal species.
  • Eutrophic lakes show high nutrient flux (due to eutrophication) but lack oxygen in the hypolimnion (bottom layer).

Source: Environment (N.C.E.R.T)

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