Gujarati
2.Human Reproduction
medium

Ovulation in mammals is caused by

A

$FSH$ and $TSH$

B

$FSH$ and $LH$

C

$FSH$ and $LTH$

D

$LTH$ and $LH$

(AIIMS-1990)

Solution

(b) Graafian follicle develops under influence of $FSH$ of anterior pituitary.

Its follicular cells secrete estrogen.

Rising level of estrogen decreases production of $FSH$ and stimulates secretion of $LH$.

The two cause the mature graafian follicle to rise to the ovarian surface and burst open releasing ovum.

Standard 12
Biology

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