How many primary follicles are left in each o | vedclass

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(B) During fetal development,millions of oogonia are formed within each fetal ovary. No more oogonia are formed or added after birth. These oogonia st

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$60,000-80,000$

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(B) During fetal development,millions of oogonia are formed within each fetal ovary. No more oogonia are formed or added after birth. These oogonia start division and enter into prophase-$I$ of the meiotic division and get temporarily arrested at that stage,called primary oocytes. Each primary oocyte then gets surrounded by layers of granulosa cells and is called the primary follicle. $A$ large number of these follicles degenerate during the phase from birth to puberty. Therefore,at puberty,only $60,000-80,000$ primary follicles are left in each ovary.

Column-$I$	Column-$II$
$a)$ Acrosome	$i)$ Contains numerous mitochondria which produce energy
$b)$ Head	$ii)$ Facilitates sperm motility
$c)$ Middle piece	$iii)$ Filled with enzymes that help in fertilization
$d)$ Tail	$iv)$ Contains elongated haploid nucleus

How many primary follicles are left in each ovary of a female at puberty?

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