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WAEC Biology 2016 Question 25

Question 25

Animal Nutrition

The function of the villi in the alimentary canal is to

  1. A.secrete gastric juice.
  2. B.curdle milk.
  3. C.emulsify fat.
  4. D.increase the surface area for absorption.
Show the answer and explanation

Answer: D (increase the surface area for absorption.)

Explanation

Villi are tiny finger-like folds of the small intestine wall. They greatly increase the surface through which digested food is absorbed.