Which one of the following characters favours the process of normal spermatogenesis in human male?

Enzyme required for fertilization of sperm and ovum is located in the ......... of sperms.

Select the correct option regarding oogenesis.

Given below are two statements :
Statement-$I$ : Each primary oocyte gets surrounded by a layer of granulosa cells and is called a primary follicle.
Statement-$II$ : At puberty,only $60,000-80,000$ primary follicles are left in each ovary.
In the light of the above statements,choose the most appropriate answer from the options given below :

Which gland's hormones are essential for the process of spermiogenesis during sperm formation?

$A$ : Dictyotene stage occurs in females only.
$R$ : Gametogenesis rests for a long period at the diplotene stage in females.