The Graafian follicle ruptures to release the ovum from the ovary by the process called
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Ovulation
Option (1) Ovulation — Correct. In the middle of the menstrual cycle (about the 14th day) the LH level rises sharply. This LH surge makes the Graafian follicle rupture and release the ovum.
Option (2) Menstruation — Incorrect. Menstruation is the breakdown of the endometrium with bleeding, when the ovum has not been fertilised.
Option (3) Implantation — Incorrect. Implantation is the embedding of the blastocyst in the endometrium of the uterus, after fertilisation.
Option (4) Copulation — Incorrect. Copulation (coitus) is the mating act in which semen is released into the vagina.
NCERT Extract:
Menstrual Cycle – “… The secretion of gonadotropins (LH and FSH) increases gradually during the follicular phase, and stimulates follicular development as well as secretion of estrogens by the growing follicles. Both LH and FSH attain a peak level in the middle of cycle (about 14th day). Rapid secretion of LH leading to its maximum level during the mid-cycle called LH surge induces rupture of Graafian follicle and thereby the release of ovum (ovulation).”