Water Pollution · NCERT Biology

Which of the following is a result of the excessive growth of planktonic algae in a water body?

  1. Improvement in water quality and clarity
  2. Dense algal bloom formation
  3. Decrease in BOD levels
  4. Increased transparency of water
Show answer and explanation

Correct answer: Dense algal bloom formation

Algal blooms are caused by high levels of nutrients in the water, leading to the rapid proliferation of algae. This often imparts a distinct color to the water and can cause the release of toxins harmful to aquatic life.

Difficulty: Medium Question 11 of 20

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