Download App

STD 12 - 2. human reproduction — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 2. human reproduction1 Mark
MCQ
Select the correct option describing gonadotropin activity in a normal pregnant female.
  • A
    High level of $FSH$ and $LH$ stimulates the thickening of endometrium.
  • B
    High level of $FSH$ and $LH$ facilitates implantation of the embryo.
  • ✓
    High level of $hCG$ stimulates the synthesis of estrogen and progesterone.
  • D
    High level of $hCG$ stimulates the thickening of endometrium.
✓

Answer

Correct option: C.
High level of $hCG$ stimulates the synthesis of estrogen and progesterone.
c
(c) : The trophoblastic cells secrete human chorionic gonadotropin hormone which has properties similar to those of lutenizing hormone $(LH)$ of the pituitary gland. It takes over the job of pituitary $LH$ during pregnancy. The $hCG$ maintains the corpus luteum and stimulates it to secrete progesterone. The latter maintains the endometrium of the uterus and causes it to grow throughout pregnancy. This also prevents menstruation. Progesterone also causes increased secretion of mucus in the cervix of the uterus that forms a protective plug during pregnancy.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from STD 12 - 2. human reproduction→STD 12 - 2. human reproduction — all question types→Biology STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation?
→
A child with mother of $O$ blood group and father of $A$ blood group, will have the following blood group.
→
Who proposed the chromosomal theory?
→
Axenic culture is:
→
$RNA$ which carry amino acid from the cytoplasm to the ribosome is
→
Against the life is related to:
→
Choose the correct option w.r.t. the function of the germ pore.
→
Genetic engineering is the
→
Kaziranga wildlife sanctuary is located in:
→
In a type of apomixis known as adventive embryony, embryos develop directly from the.
→