Which one of the following is the correct matching of the events occurring during the menstrual cycle?

	Column I	Column II
1.	Ovulation	LH and FSH attain peak levels and sharp fall in the secretion of progesterone
2.	Proliferative phase	Rapid regeneration of myometrium and  maturation of Graafian follicle
3.	Development of corpus luteum	Secretory phase and increased secretion of progesterone
4.	Menstruation	Breakdown of myometrium and ovum not fertilized

In humans, at the end of the first meiotic division, the male germ cells differentiate into
1. primary spermatocytes
2. secondary spermatocytes
3. spermatids
4. spermatogonia

Which extra embryonic membrane in humans prevents desiccation of the embryo inside the uterus?
1. Chorion
2. Allantois
3. Yolk sac
4. Amnion

Which one of the following statement is incorrect about menstruation?

Which part of the ovary in mammals acts as an endocrine gland after ovulation?

In the human female, menstruation can be deferred by the administration of:
1. LH only
2. Combination of FSH and LH
3. Combination of estrogen and progesterone
4. FSH only

Withdrawal of which of the following hormones is the immediate cause of menstruation?

An oocyte is released from the ovary under the influence of LH :

Both corpus luteum and macula lutea are :
1. found in human ovaries
2. a source of hormones
3. characterized by a yellow colour
4. contributory in maintaining pregnancy

What structure gets implanted on the wall of the uterus during embryonic development?

1.		2.
3.		4.