Question

Match column-I with column-II and choose the correct option:

	Column-I		Column-II
A.	Hyaluronidase	I.	Graffian follicle
B.	Corpus Luteum	II.	Mammary gland
C.	Colostrum	III.	Progesterone
D.	Antrum	IV.	Acrosomal reaction

A. A-II, B-I, C-IV, D-III
B. A-IV, B-II, C-III, D-I
C. A-IV, B-III, C-II, D-I
D. A-IV, B-III, C-I, D-II

Answer 1

Hint: The corona radiata is penetrated by discharging hyaluronidase from the acrosome to digest cumulus cells surrounding the oocyte. The corpus luteum's primary function is to pulse out hormones such as progesterone. Colostrum is the first milk produced by the body during pregnancy. The antrum is a fluid-filled space or cavity that develops in the follicle, known as the tertiary follicle.

Complete Step by Step Answer:
When the sperm penetrates the secondary oocyte, the acrosomal reaction occurs in the ampulla of the fallopian tube (the site of fertilization). The first stage involves the acrosome releasing hyaluronidase to digest cumulus cells surrounding the oocyte and exposing acrosin connected to the sperm's inner membrane. The cumulus cells are integrated into a gel-like substance primarily composed of hyaluronic acid, and they develop in the ovary alongside the egg, supporting it as it grows. Before the sperm cell attains the zona pellucida, the acrosome reaction must occur.
The menstrual cycle is divided into two phases: follicular and postovulatory (or luteal). The luteal phase lasts roughly two weeks. A corpus luteum tends to form in the ovary during this time.
The corpus luteum is formed from a follicle that once housed a developing egg. As eventually as a mature egg emerges from the follicle, this structure begins to form. The corpus luteum is required for conception and pregnancy to last. The corpus luteum's primary function is to pulse out hormones such as progesterone.
Colostrum is the first breast milk produced by the mammary glands after childbirth. It's high in antibodies and antioxidants, which help to build a newborn baby's immune system. It transforms into breast milk within 2 to 4 days of the baby's birth. Colostrum is thicker and yellower than regular breast milk.
The primary follicles are formed when a layer of granulosa cells encircles each primary oocyte. Secondary follicles are formed when primary follicles are surrounded by additional layers of granulosa cells and a new theca. The secondary follicle quickly transforms into a tertiary follicle, which has a fluid-filled cavity known as the antrum. The Graafian follicle is one of these tertiary follicles that undergo further maturation.
Thus, it can be concluded that option C is correct.

Note: Sperm that cannot properly complete the acrosome reaction will not be able to fertilize an egg. The corpus luteum is a glandular body formed after ovulation from the remains of the Graafian follicle. The hormones progesterone and estrogen are cited during the second half of the ovulatory cycle.