The testis produces:

Given below are two statements:
Statement-$I$: The scrotum helps in maintaining the low temperature of the testes.
Statement-$II$: Low temperature,compared to the normal internal body temperature,is necessary for spermatogenesis.
In the light of the above statements,choose the most appropriate answer from the options given below.

Which of the following is a derivative of the $Mullerian$ duct in male rabbits?

Which gland helps in the lubrication of the penis during coitus?

During early and middle fetal life,the testes are located in the:

Cryptorchidism is the condition in man when