Assertion : During embrynic stage testes descend down and at the time of birth , it comes into scrotum .
Reason : Spermatogenesis process requires less than body temperature .

Assertion : The testes are situated outside the abdominal cavity within scrotum . Reason : Lower temperature for the testis is necessary for spermatogenesis.

Scrotum helps in maintaining low temperature of the testes about_______lesser than body temperature.

Comment upon the following: At the time of birth, the testes descend down into the scrotal sac.

Assertion : The testes are situated outside the abdominal cavity within scrotum . Reason : Lower temperature for the testis is necessary for spermatogenesis. (a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion . (b) If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. (c) If Assertion is True but the Reason is False . (d) If both Assertion & Reason are False.

Assertion (A): The skin of the scrotum contract or expand with the change in the ambient temperature. Reason (R): Maturation of sperms requires a specific temperature.

Assertion (A): In human male, testes are extra abdominal organs which are present inside scrotum. Reason ( R): Scrotum has a relatively lower temperature needed for the production and storage of sperms.

Assertion : In the human the temperature of scrotum is 2-2.5^(@)C lesser then normal body temperature . Reason : Formation of sperm does not occur at normal core body temperature .

Assertion : In the human the temperature of scrotum is 2-2.5^(@)C lesser then normal body temperature . Reason : Formation of sperm does not occur at normal core body temperature . (a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion . (b) If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. (c) If Assertion is True but the Reason is False . (d) If both Assertion & Reason are False.

Assertion : Iron is a microelement Reason : Microelements are required in traces only, less than 1 mg/gm of dry matter