(i) (a) Testis : To produce male gametes/ sperms or male hormones/ testosterone.
(b) Scrotum : To provide optimal temperature to testis for the formation of sperm.
(c) Vas deferens : To deliver the sperms to the urinary bladder.
(d) Prostate glands : To secrete the fluid which provides nutrition and medium for transport of sperms.
(ii) (a) Regulates formation of sperms.
(b) Brings about the changes in boys during adolescence.
