Multiple choice

Which of these statements regarding eutrophication is/are correct?

  1. Primary productivity becomes low.
  2. Eutrophication leads to a state of hypoxia in water bodies.
  3. Availability of oxygen increases.

  1. 1 only

  2. 2 only

  3. 3 only

  4. Both 1 and 2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Primary productivity is high in eutrophic water bodies. Due to excessive nutrients, especially nitrogen and phosphorus, these water bodies are able to support an abundance of aquatic plants, thereby leading to a high primary productivity. Because of abundance of aquatic plants and algae, the oxygen availability decreases. When organisms (like aquatic plants and algae) die, they consume the oxygen in the body of water, thereby creating the state of hypoxia.

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