Question

What happens when phosphorus, nitrates, and detergents in water lead to an acceleration in the growth of algae?

(a) Extinction

(b) Eutrophication

(c) Increase in the number of fishes

(d) Increase in the number of aquatic plants

I have been asked this question in an interview for internship.

This interesting question is from Environmental Issues in section Environmental Issues of Biology – Class 12

Answer 1

Right option is (b) Eutrophication

The explanation: The excessive richness of nutrients (phosphorus, nitrates, and detergents) in a lake or other body of water that leads to acceleration in the growth of algae and the natural aging of the lake is known as eutrophication. Excess algal growth deoxygenates water leading to the death of aquatic life.