Question

Match List-I with List-II
List-I
(A). FSH
(B). $\text{PGF}_{2\alpha}$
(C). GnRH
(D). eCG
List-II
(I). Placenta
(II). Hypothalamus
(III). Uterus
(IV). Pituitary
Choose the correct answer:}

• (A) - (IV), (B) - (II), (C) - (I), (D) - (III)
• (A) - (I), (B) - (III), (C) - (II), (D) - (IV)
• (A) - (IV), (B) - (III), (C) - (II), (D) - (I)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

Remember that eCG is unique to the equine placenta (endometrial cups).
In other species, it exhibits strong FSH-like activity, which is why it is widely used in veterinary medicine for superovulation protocols.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Reproductive physiology in animals is regulated by hormones secreted by various endocrine glands and tissues, including the hypothalamus, pituitary gland, gonads, uterus, and placenta.

Step 2: Detailed Explanation:
Let us match each hormone with its site of synthesis:
- (A) FSH (Follicle-Stimulating Hormone): This glycoprotein hormone is synthesized and secreted by the gonadotropic cells of the anterior pituitary gland (IV).
- (B) $\text{PGF_{2\alpha}$ (Prostaglandin F2-alpha):} This lipid hormone is synthesized and secreted by the endometrium of the non-pregnant uterus (III) to cause luteolysis of the corpus luteum.
- (C) GnRH (Gonadotropin-Releasing Hormone): This decapeptide is synthesized by neurosecretory cells in the hypothalamus (II) and released into the hypophyseal portal system to stimulate the anterior pituitary.
- (D) eCG (equine Chorionic Gonadotropin): Formerly known as Pregnant Mare Serum Gonadotropin (PMSG), this hormone is produced by the endometrial cups of the equine placenta (I) during early pregnancy.
Matching these gives: (A) - (IV), (B) - (III), (C) - (II), (D) - (I).

Step 3: Final Answer:
The correct matching sequence corresponds to option (C).