Question

What is the characteristic feature of Eutrophic Lake?

• A. Low level of nutrients
• B. Little organic matter
• C. Low productivity
• D. Very rich in nutrients

Hint:

Eutrophic lakes are nutrient-rich, often leading to excessive plant growth and algae blooms. In contrast, oligotrophic lakes have low nutrient levels and lower biological productivity.

Answer 1

The Correct Option is D

Step 1: Characteristics of Eutrophic Lake.
An eutrophic lake is one that has high levels of nutrients, particularly nitrogen and phosphorus, which lead to high levels of algae and plant growth. These lakes typically have a lot of organic matter.

Step 2: Understanding the options.
- \((A) Low level of nutrients:\) Incorrect. Eutrophic lakes have high nutrient levels, not low. - \((B) Little organic matter:\) Incorrect. Eutrophic lakes are rich in organic matter due to excessive plant and algae growth. - \((C) Low productivity:\) Incorrect. Eutrophic lakes are highly productive due to abundant nutrients. - \((D) Very rich in nutrients:\) Correct. This is the defining characteristic of eutrophic lakes.

Step 3: Conclusion.
Eutrophic lakes are known for being rich in nutrients, which leads to high biological productivity.

Final Answer: Very rich in nutrients.