Human Reproduction

Match List I with List II related to embryonic development at various months of pregnancy :

1. A-II, B-IV, C-III, D-I
2. A-II, B-III, C-IV, D-I
3. A-IV, B-II, C-III, D-I
4. A-III, B-II, C-IV, D-I

Which of the following hormones is not secreted by human placenta?

1. LH
2. hCG
3. Estrogen
4. Progesterone

Find the correct statement : Choose the correct answer from the options given below :

1. B, C, D and E only
2. A, C, D and E only
3. A and E only
4. B and C only

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below:

1. (A) is not correct but (R) is correct
2. Both (A) and (R) are correct and (R) is the correct explanation of (A)
3. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
4. (A) is correct but (R) is not correct

Which of the following secretes the hormone, relaxin, during the later phase of pregnancy?

1. Uterus
2. Graafian follicle
3. Corpus luteum
4. Foetus

Hormones secreted by the placenta to maintain pregnancy are

1. hCG, hPL, progestogens, prolactin
2. hCG, hPL, estrogens, relaxin, oxytocin
3. hCG, hPL, progestogens, estrogens
4. hCG, progestogens, estrogens, glucocorticoids

The amnion of mammalian embryo is derived from

1. ectoderm and mesoderm
2. endoderm and mesoderm
3. mesoderm and trophoblast
4. ectoderm and endoderm

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

1. ovary
2. placenta
3. Fallopian tube
4. pituitary.

Select the correct option describing gonadotropin activity in a normal pregnant female.

1. High level of FSH and LH stimulates the thickening of endometrium.
2. High level of FSH and LH facilitates implantation of the embryo.
3. High level of hCG stimulates the synthesis of estrogen and progesterone.
4. High level of hCG stimulates the thickening of endometrium.

Which of the following is not the function of placenta?

1. Facilitates supply of oxygen and nutrients to embryo
2. Secretes estrogen
3. Facilitates removal of carbon dioxide and waste material from embryo
4. Secretes oxytocin during parturition

In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was :

1. High levels of FSH and LH in uterus to stimulate endometrial thickening
2. High level of circulating HCG to stimulate estrogen and progesterone synthesis
3. High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo
4. High level of circulating HCG to stimulate endometrial thickening

The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?

1. Fourth month
2. Fifth month
3. Sixth month
4. Third month

A change in the amount of yolk and its distribution in the egg will affect:

1. Fertilisation
2. Pattern of cleavage
3. Formation of zygote
4. Number of blastomeres produced

Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?

1. Yolk sac
2. Amnion
3. Chorion
4. Allantois

Which of the following hormones is not a secretion product of human placenta?

1. Estrogen
2. Progesterone
3. Prolactin
4. Human chorionic gonadotropin

During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called:

1. Organizer phenomena
2. Pattern formation
3. Axis formation
4. Anamorphosis

Blastopore is the pore of:

1. A.C.
2. Archenteron
3. Blastocoel
4. Coelom