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JAMB Biology 1987 Question 13

Question 13

Animal Kingdom

Which of the following is NOT a characteristic of snails?

  1. A.Bilateral symmetry
  2. B.Chitinous exoskeleton
  3. C.Muscular foot
  4. D.Soft unsegmented body in a mantle.
Show the answer and explanation

Answer: B (Chitinous exoskeleton)

Explanation

A chitinous exoskeleton is a feature of arthropods. The snail's shell is made of calcium carbonate, secreted by the mantle.