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WAEC Biology 2026 Question 50

Question 50

Population Ecology

An ecosystem comprises abundance of grasses, 120 antelopes and 20 hyenas. What would likely happen to the ecosystem if 15 of the hyenas were killed by a disease?

  1. A.Increase in the population of grasses
  2. B.Increase in number of antelopes
  3. C.Decrease in the number of antelopes
  4. D.Increase in the number of hyenas
Show the answer and explanation

Answer: B (Increase in number of antelopes)

Explanation

With fewer predators, fewer antelopes are eaten, so the antelope population rises.