Assertion : In mammals the female secondary sexual characters are deceloped by gonadotropins.
Reason : Gonadotropins are secreted by graafian follicle.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reson are false.

Answer

D

Explanation

The female secondary sexual characters are developed by estrogens. Estrogens are steroid. hormones secreted by growing ovarian follicles. It includes estradiol, estriol and estrone. This hormone is responsible for the development of female secondary sexual and accessory characters. In humans, it is also formed in the adrenal cortex, testis and foetoplacental unit. Gonadotrophic hormones (LH and FSH) are secreted by the anterior lobe of the pituitary gland. LH is responsible for ovulation and transforms Graafian follicle into corpus luteum and FSH stimulates spermatogenesis and maturation of Graafian follicle and secretion of estrogen in ovaries. prodcution is called productivity. It has two aspecte, gross promary productiveity and net primary prodictivity. The arate of total production of prganic matter during photosynthesis is known as gross primary prodictivity Its considerable amount is utisised by plants in respiration . The organic matter synthesised by plants (GPP) minus the rate of respeiration and other loss represents the net primary producitivity.