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easyMCQUP Police Constable2026Biology
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Which of the following statements is correct?

  1. A
    Eutrophication refers to increase in domestic sewage and waste water in lakes.
  2. B
    Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
  3. C
    Presence of large amount of nutrients in water restricts ‘Algal Bloom’
  4. D
    Algal Bloom decreases fish mortality

Solution & Step-by-step Explanation

1. Eutrophication is the natural aging of a lake by biological enrichment of its water.2. Correct statement: Biomagnification refers to the increase in concentration of non-degradable toxicants (like DDT) as they move up the food chain.3. High nutrients cause algal blooms.4. Algal blooms increase fish mortality.

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Try it yourself before checking the explanation above.

Which of the following statements is correct?
A
Eutrophication refers to increase in domestic sewage and waste water in lakes.
B
Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
C
Presence of large amount of nutrients in water restricts ‘Algal Bloom’
D
Algal Bloom decreases fish mortality

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