Which of the following hormones is secreted by the placenta?

The correct answer is Option (4) → All of the above

The placenta joins the foetus to the mother’s body. It supplies oxygen and food to the embryo and removes its wastes. It also works as an endocrine tissue, making several hormones that maintain pregnancy.

Option (1) Human chorionic gonadotropin (hCG) — Correct statement, but it is only one of the correct points, so on its own it is not the answer. The placenta makes human chorionic gonadotropin (hCG), a hormone produced only during pregnancy.

Option (2) Human placental lactogen (hPL) — Correct statement, but it is only one of the correct points, so on its own it is not the answer. The placenta also makes human placental lactogen (hPL).

Option (3) Estrogens — Correct statement, but it is only one of the correct points, so on its own it is not the answer. Estrogens are made by the placenta too.

NCERT Extract:
Pregnancy and Embryonic Development – “… 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.”