Select the correct option regarding the composition of semen.

If for some reason,the $vasa$ $efferentia$ in the human reproductive system get blocked,the gametes will not be transported from:

Leydig cells are found in

Read the following paragraph with two blanks: Each testis has about $A$ compartments called as testicular lobules. Each lobule contains $B$ highly coiled seminiferous tubules in which the sperms are produced. The correct option for the two blanks is

$A$

$B$

From which germ layer are human testes derived?

The glans penis is formed by which of the following?