If the number of chromosomes in a somatic cell is $42$,what will be the number of chromosomes in the cuboidal epithelial cells of the seminiferous tubules?

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 part of the sperm helps in penetrating the egg membrane?

$A$ - Acrosome possesses mitochondria.
$R$ - Middle piece of sperm is filled with enzymes.

The space between the acrosome and the nucleus is called the ......

Which part of the spermatid forms the acrosome of the sperm?