JAMB Biology 2011 Objective — Question 21

Question 21 of 60 from the Joint Admissions and Matriculation Board (JAMB) Biology 2011 Objective paper, with the correct answer and a full explanation.

The testes in male mammals descend into the scrotal sac because

A. A. there is congestion in the lower abdomen
B. B. they run the risk of being destroyed
C. C. they need special support
D. D. they require a relatively low temperatureCorrect

Explanation

The testes must be at a temperature slightly lower than body temperature for optimum sperm production.

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