The hormone which brings about characteristic changes in the male at puberty is called:

The target of $ICSH$ is

Give the name of two hormones $A$ and $B$ in the figure given below.

Eunuchoidism is due to the failure of production of

Androgens are secreted by the ........ .

$A$ boy after attaining sexual maturity shows muscular growth,growth of facial and axillary hair,aggressive behavior,and a low pitch of voice. These changes are attributed to the . . . . . . hormone.