| Direction: Each of these questions contains two statements |
| Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below. |
| Assertion [A] The testes are situated outside the abdominal cavity within scrotum. |
| Reason [R] Muscles in scrotum helps to maintain low temperature of testes, necessary for spermatogenesis. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true
Correct Answer: A
Solution :
[a] Both A and R are true and R is the correct explanation of A. The testes are situated outside the abdominal cavity within a pouch called scrotum. The scrotum helps in maintaining the low temperature of the testes \[\left( 2-2.5{}^\circ C \right)\] lower than the normal internal body temperature necessary for spermatogenesis.
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