Topics:
Animal Physiology, Animal Refresher
Match Hormones to Their Functions
Match the column:
| TABLE-I | TABLE-II |
|---|---|
| 1) Prolactin | a) Super-ovulation |
| 2) PMSG | b) Pseudo-pregnancy |
| 3) ADH | c) Broodiness in poultry |
| 4) Prostaglandin | d) Water-regulation |
| 5) MSH | e) Luteolysis |
- 1-c, 2-a, 3-d, 4-e, 5-b — Correct Answer
- 1-b, 2-c, 3-a, 4-d, 5-e
- 1-a, 2-b, 3-c, 4-d, 5-e
- 1-e, 2-d, 3-c, 4-b, 5-a
Explanation:
Correct Answer: 1-c, 2-a, 3-d, 4-e, 5-b
- 1. Prolactin → c) Broodiness in poultry: Prolactin (anterior pituitary) stimulates milk secretion in mammals and broodiness (incubation/sitting behavior) in hens. High prolactin in hens stops egg laying and causes sitting on eggs.
- 2. PMSG → a) Super-ovulation: PMSG (Pregnant Mare Serum Gonadotropin, now called eCG — equine Chorionic Gonadotropin) has FSH-like and LH-like activity. It is used to induce super-ovulation in cattle and sheep for embryo transfer (ET) programs — multiple follicles develop and ovulate.
- 3. ADH → d) Water-regulation: ADH (Antidiuretic Hormone / Vasopressin) from posterior pituitary increases water reabsorption in DCT and collecting ducts. Called 'Water regulating hormone.' Released in response to hyperosmolarity of blood or hypovolemia.
- 4. Prostaglandin (PGF₂α) → e) Luteolysis: PGF₂α causes regression of the corpus luteum (CL) → drops progesterone → animal returns to estrus. Used commercially for estrus synchronization in cattle (e.g., Lutalyse®).
- 5. MSH → b) Pseudo-pregnancy: MSH (Melanocyte-Stimulating Hormone) from intermediate lobe of pituitary increases melanin deposition. Note: This matching is as per the answer key.
📚 About this Topic — Animal Physiology
This multiple choice question is from Animal Physiology, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Physiology to strengthen your preparation.
