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WAEC Biology 2011 Question 21

Question 21

Reproduction in Animals

The testes in male mammals descend into the scrotal sac because

  1. A.there is congestion in the lower abdomen.
  2. B.they run the risk of being destroyed.
  3. C.they need special support.
  4. D.they require a relatively low temperature.
Show the answer and explanation

Answer: D (they require a relatively low temperature.)

Explanation

Sperm production needs a temperature a little below normal body temperature; the scrotum keeps the testes cooler.