Question

Which of the following statement is the incorrect reason for eutrophication?

(A) excess usage of fertilisers

(B) excess usage of detergents

(C) dense plant population in water bodies

(D) lack of nutrients in water bodies that prevent plant growth

• A. (D) only
• B. (C) only
• C. (B) and (D) only
• D. (A) only

Answer 1

The correct option is A

(D) only

Explanation for the correct option:

Option (a):

• Eutrophication is the process by which water bodies support a population of plants by killing animal life that deprives them of oxygen and resulting in a loss of diversity.
• The reason for eutrophication are as follows:

1. Excess usage of fertilisers
2. Excess usage of detergents
3. Dense plant population in water bodies

• Lack of nutrients in a water body is not the reason for eutrophication.

Explanation for the incorrect option:

Option (b):

• The dense plant population in water bodies is the reason for eutrophication.
• So, this is not the correct option.

Option (c):

• The excess usage of detergents is the reason for eutrophication.
• So, this is not the correct option.

Option (d):

• The excess usage of fertilisers is the reason for eutrophication.
• So, this is not the correct option.

Final answer:

Hence, option (a) is the correct answer.