Biology 12 Chapter - 20 Reproduction - 15

Biology 12 Chapter - 20 Reproduction - 15

1. Which hormone control FSH by negative feedback inhibition?

a) Progesterone
b) Lactogen
c) LH
d) Estrogen

2. What is the signal for anterior pituitary to release LH?

a) Decrease in FSH
b) Decrease in estrogen
c) Increase in FSH
d) Increase in progesterone

3. What is the signal for anterior pituitary to release LH?

a) Decrease in estrogen
b) Increase in FSH
c) Increase in progesterone
d) Increase in estrogen

4. Ovulation takes place in……………minutes?

a) 10
b) 20
c) 5
d) 15

5. On which day secretory phase takes place, if menstrual loss is day 1?

a) Days 15-28
b) Days 6-14
c) Days 1-15
d) Days 1-5

6. Which phase is also called post-ovulatory phase?

a) Proliferative phase
b) Uterine phase
c) Secretory phase
d) Menstrual phase

7. Which hormones vascularizes endometrium of uterus?

a) Estrogen and LH
b) Progesterone and estrogen
c) FSH and LH
d) Progesterone and LH

8. When estrogen level increases anterior pituitary releases……………?

a) FSH
b) LH
c) Progesterone
d) Gonadotropins

9. Which hormone converts ruptured follicle into corpus luteum?

a) LH
b) FSH
c) Estrogen
d) Progesterone

10. Ruptured follicle is converted into yellowish glandular structure called………………..?a) Corpus luteum
b) None of the above
c) Oogenesis
d) Follicle atresia

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