Question

Statement 1: Algal bloom occurs when nitrogen content increases in the water body.
Statement 2: Certain human activities lead to an increase in nitrogen content.

• A. Statement 1 is true but statement 2 is false.
• B. Statement 1 is false but statement 2 is true.
• C. Both the statements are true.
• D. Both the statements are false.

Answer 1

The correct option is C Both the statements are true.

Nitrogen is an essential element in the biochemical pathway and an increase in its content will naturally lead to robust growth of algae. Use of artificial fertilisers which are rich in nitrogen, when washed away will tend to accumulate in the water body and will be used up by algae for growth.