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WAEC Biology 2015 Objective — Question 48

Question 48 of 50 from the West African Examinations Council (WAEC) Biology 2015 Objective paper, with the correct answer and a full explanation.

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In explaining the term camouflage to a class, the diagram below showing four varieties, P, Q, R and S, of the same species of fish living amongst water plants in a river were used. Use the diagram to answer questions 48 to 50. Which of the varieties is likely to decrease most in number if a predatory fish is introduced into the river?

Diagram for question 48
  • A. P
  • B. Q
  • C. RCorrect
  • D. S

Explanation

The fish variety R is susceptible to the greatest predation since it does not blend with its environment, making it easy for predators to locate.

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