Question

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

• 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 reason are false

Answer 1

Answer: (D)

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 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.