Which of the following hormones are produced by placental tissue?
(A) hCG
(B) Relaxin
(C) hPL
(D) Progestogens
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A), (C) and (D) only
(A) hCG — Correct. Human chorionic gonadotropin is made by the placenta. It keeps the corpus luteum working in early pregnancy.
(B) Relaxin — Incorrect. Relaxin is a pregnancy hormone, but NCERT says it is secreted by the ovary in the later phase of pregnancy. It is not listed among the placental hormones.
(C) hPL — Correct. Human placental lactogen, as its name says, is made by the placenta.
(D) Progestogens — Correct. Progestogens are hormones that act like progesterone. They keep the endometrium in place so the pregnancy continues.
NCERT Extract:
Pregnancy and Embryonic Development – “… The placenta facilitate the supply of oxygen and nutrients to the embryo and also removal of carbon dioxide and excretory/waste materials produced by the embryo. The placenta is connected to the embryo through an umbilical cord which helps in the transport of substances to and from the embryo. Placenta also acts as an endocrine tissue and produces several hormones like human chorionic gonadotropin (hCG), human placental lactogen (hPL), estrogens, progestogens, etc. In the later phase of pregnancy, a hormone called relaxin is also secreted by the ovary. Let us remember that hCG, hPL and relaxin are produced in women only during pregnancy.”