The cleavage divisions in humans is:

1. holoblastic, equal and indeterminate

2. holoblastic, unequal and indeterminate

3. holoblastic, equal and determinate

4. holoblastic, unequal and determinate

All of the following structures are derived from mesoderm except the ____.

1. pancreas

2. dermis of skin

3. notochord

4. heart

Several hormones like hCG, hPL, oestrogen, progesterone are produced by

(1) ovary

(2) placenta

(3) Fallopian tube

(4) pituitary

In a normal pregnant woman, the amount of total gonadotropin activity was assessed.

The result expected was

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

embryo

2. High level of circulating HCG to stimulate endometrial thickening

3. High levels of FSH and LH in uterus to stimulate endometrial thickening

4. High level of circulating HCG to stimulate oestrogen and progesterone synthesis

Which extra embryonic membrane in humans prevents desiccation of the embryo inside

the uterus ?

1. Chorion

2. Allantois

3. Yolk sac

4. Amnion

Cleavage differs from mitosis in lacking

1. synthetic phase

2. growth phase

3. both 1. and 2.

4. all of these

The 'cells of Rauber' are

(1) secretory cells of endometrium in uterus

(2) inner cell mass of blastocoel

(3) outer cells of trophoblast in contact with uterine wall

(4) cells of trophoblast, in contact with inner cell mass of blastocyst.

Among the following stem cells, which are found in the umblical cord?
(1) Embryonic stem cells

(2) Adult stem cells

(3) Cord blood stem cells

(4) All of the above 

From which of the embryological germ layers is the epithelial tissue derived

(I) ectoderm

(II) mesoderm

(III) endoderm

(1) I & II are correct

(2) I & III are correct

(3) II & III are correct

(4) I & II & III are correct

Assertion   :       Embryonic development proves interrelationship and common ancestory of metazoans.

Reason      :       It involves similar sequence of five dynamic processes during development.