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JAMB Biology 2010 Question 6

Question 6

Evolution

Use the diagram to answer: With respect to their decreasing dependence on aquatic conditions for reproduction, which of the following is the correct arrangement of the animals represented?

Diagram for this question
  1. A.IV, III, II and I
  2. B.I, II, IV and III
  3. C.III, II, IV and I
  4. D.I, IV, II and III
Show the answer and explanation

Answer: A (IV, III, II and I)

Explanation

The fish (IV) breeds entirely in water, the toad (III) must lay eggs in water, the crocodile (II) lays shelled eggs on land, and the rabbit (I) develops young inside its body.