How many sperms are formed by four primary spermatocytes?

Which of the following parts of the sperm provides energy for its motility?

Given below are two statements:
$Statement-I$: At the onset of puberty, the pituitary gland begins secretion of gonadotropin releasing hormone.
$Statement-II$: $GnRH$ initiates the significant increase in the secretion of follicle stimulating hormone $(FSH)$ which induces gametogenesis.
In light of above statements, choose the correct appropriate answer from the options given below.

Where does the functional maturation of sperm occur?

At which stage does the formation of the acrosome occur during spermatogenesis?

What is the process of yolk synthesis called?