Males in whom testes fail to descend to the scrotum are generally infertile. Why ?
$A$ pair of bulbourethral gland also called $...A...$ gland present on the either side of $...B.... $ It secrets $...C...$ fluid and $...D...$ for lubricating the penis. Here $A, B, C$ and $D$ are
Most mammals have their testis sac called scrotal sac which is for
Functions of seminal fluid is/are
Select the correct sequence of transport of sperm cells in male reproductive system