In human beings, the eggs are:

1

(a)

Skin lecithal

(b)

Macrolecithal

(c)

Mesolecithal

(d)

Alecithal

Some important events in the human female reproductive cycle are given below.Arrange the events in a proper sequence.A-secretion of FSH, B-growth of corpus luteum, C-growth of the follicle and oogenesis, D-ovulation, E-sudden increase in the levels of LH

1

(a)

A  D  C  E  B

(b)

B  A  C  D  E

(c)

C  A  D  B  E

(d)

A  C  E  D   B

Foetal ejection reflex in human female is induced by

1

(a)

differentiation of mammary glands

(b)

the pressure exerted by amniotic fluid

(c)

the release of oxytocin from pituitary

(d)

fully developed foetus and placenta

Ina normal pregnant woman, the amount of total gonadotropin activity was assessed. the result expected was

1

(a)

High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo

(b)

High level of circulating HCG to stimulate endometrial thickening

(c)

High level of FSH and LH in uterus to stimulate endometrial thickening

(d)

high level of circulating Hcg to stimulate estrogen and progesterone synthesis

How does the sperm penetrate through the zona pellucida in human ovum?

1

(a)

The sperm penetrates through zona pellucida with the help of secretions from acrosome.

Name the calls that nourish the germ cells in the testes.Where are these cells located in the testes?

1

(a)

Sertoli cells.They are found on the inner lining of seminiferous tubule .

When do oogenesis and spermatogenesis initiate in human female and male,respectively?

1

(a)

Oogenesis starts during embryonic developmental stages of the female foetus.

Spermatogenesis starts at puberty.