Which of the following secretes the hormone, relaxin, during the later phase of pregnancy? (NEET 2021)
Answer: (D) Corpus luteum. Answer: (D) Corpus luteum Solution: In the later phase of pregnancy the hormone relaxin is secreted by the ovary; the relevant ovarian endocrine structure during pregnancy is the corpus luteum, which is why the accepted key is corpus luteum.
- A.Foetus
- B.Uterus
- C.Graafian follicle
- D.Corpus luteum✓
Correct Answer
(D) Corpus luteum
Solution & Explanation
Answer: (D) Corpus luteum Solution: In the later phase of pregnancy the hormone relaxin is secreted by the ovary; the relevant ovarian endocrine structure during pregnancy is the corpus luteum, which is why the accepted key is corpus luteum. NCERT states the source as the ovary, and the corpus luteum is the ovarian source intended by the option set (the other options — foetus, uterus, Graafian follicle — do not secrete relaxin). NCERT Reference: Ch 2, p.37, line 26 — "phase of pregnancy, a hormone called relaxin is also secreted by"