Extrusion of the second polar body from the e | vedclass

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Question

(A) The secondary oocyte remains arrested at the metaphase-$II$ stage of meiosis-$II$ until a sperm makes contact with the zona pellucida of the ovum.

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after entry of sperm but before fertilization

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(A) The secondary oocyte remains arrested at the metaphase-$II$ stage of meiosis-$II$ until a sperm makes contact with the zona pellucida of the ovum.Upon the entry of the sperm into the cytoplasm of the secondary oocyte,the completion of meiosis-$II$ is triggered.This process results in the formation of a large haploid ovum (ootid) and a small second polar body.Therefore,the extrusion of the second polar body occurs after the entry of the sperm but before the fusion of the male and female pronuclei (fertilization).

List-$I$	List-$II$
$1$. Head	$s$. Contains haploid nucleus
$2$. Acrosome	$p$. Filled with enzymes
$3$. Middle piece	$q$. Contains mitochondria
$4$. Tail	$r$. Sperm motility

Extrusion of the second polar body from the egg nucleus occurs:

Similar Questions

After ovulation,the ruptured Graafian follicle transforms into which structure?

Provide a schematic labelled diagram to represent oogenesis.

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

With reference to human sperm,match the List-$I$ with List-$II$.
List-$I$ List-$II$
$1$. Head $s$. Contains haploid nucleus
$2$. Acrosome $p$. Filled with enzymes
$3$. Middle piece $q$. Contains mitochondria
$4$. Tail $r$. Sperm motility

Choose the correct option from the following:

Which of the following hormones is secreted in a high amount,causing ovulation in women?

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