What is observed during the first meiotic division of oogenesis?

Which hormone induces ovulation?

How many structures in the list given below are haploid? Spermatid,secondary oocyte,primary spermatocyte,ovum,sperm,oogonia,spermatogonia,polar body.

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 :

In the ovum of a rabbit, the Graafian follicle consists of:

Spermatogonia undergo ....... to produce spermatozoa.