Match Column 1 with Column 2:
| Column 1 | Column 2 |
| 1) Leydig cell | a) Layer of ovum |
| 2) Placenta | b) Androgen |
| 3) Zona pellucida | c) Lubrication of penis |
| 4) Bulbourethral gland | d) Human chorionic gonadotropin |
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 1-b,2-d,3-a,4-c
(1) Leydig cell — this matches (b) Androgen. Leydig cells (interstitial cells) lie in the spaces between the seminiferous tubules of the testis. They make the male hormones called androgens.
(2) Placenta — this matches (d) Human chorionic gonadotropin. The placenta joins the foetus to the mother’s body. It also works as an endocrine tissue, and hCG is one of the hormones it makes during pregnancy.
(3) Zona pellucida — this matches (a) Layer of ovum. The secondary oocyte forms this membrane around itself. During fertilisation, the sperm first touches this layer of the ovum.
(4) Bulbourethral gland — this matches (c) Lubrication of penis. It is one of the male accessory glands. Its secretion is part of the seminal plasma and helps lubricate the penis.
NCERT Extract:
The Male Reproductive System – “… Leydig cells synthesise and secrete testicular hormones called androgens. Other immunologically competent cells are also present. … The secretions of bulbourethral glands also helps in the lubrication of the penis.”
Gametogenesis – “… The secondary oocyte forms a new membrane called zona pellucida surrounding it. The Graafian follicle now ruptures to release the secondary oocyte (ovum) from the ovary by the process called ovulation.”
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.”