Correct option is B
Correct Answer:
(b) A–iii; B–i; C–iv; D–ii
Explanation:
Growth hormone secretion is inhibited by somatostatin (A–iii).
Mifepristone is a progesterone receptor antagonist and inhibits the action of progestogens (B–i).
Parathormone (PTH) secretion is suppressed by high calcium levels via negative feedback (C–iv).
Inhibin B specifically inhibits follicle-stimulating hormone (FSH) secretion from the anterior pituitary (D–ii).
Information Booster :
· Hormone secretion is commonly regulated by feedback inhibition.
· Somatostatin is a broad inhibitory hormone affecting GH and TSH.
· Inhibin B provides gonad-specific regulation of FSH levels.
· Calcium homeostasis tightly controls parathormone release.
Additional Information (Incorrect Options):
A–i / A–iv: Growth hormone is not directly inhibited by mifepristone or calcium.
B–ii / B–iv: Progestogens are not inhibited by inhibin or calcium levels.
C–i / C–iii: Parathormone is not inhibited by steroid antagonists or somatostatin.
D–i / D–iii: FSH is not inhibited by mifepristone or somatostatin directly.
