Spermiogenesis is possible due to....

The cavity present in the Graafian follicle is:

The hormone which acts on Sertoli cells and stimulates the process of spermiogenesis is

Name a cell that is found arrested in the diplotene stage for months or years. Comment in $2-3$ lines on how it completes its cell cycle.

Graafian follicle gets converted into . . . . . . after ovulation under the effect of . . . . . . .

Identify the correct statement on 'inhibin'.