Match the items given in column I with those in column II and select the correct option.

	Column I		Column II
(a)	Leydig cells	(i)	Testosterone
(b)	Placenta	(ii)	Progesterone
(c)	Corpus luteum	(iii)	hPL
(d)	Sertoli cells	(iv)	Inhibin

	a	b	c	d
1.	i	ii	iii	iv
2.	i	ii	iv	iii
3.	ii	i	iii	iv
4.	i	iii	ii	iv

Leydig cells or interstitial cells of testes secrete androgens like testosterone.

Placenta acts as an endocrine tissue and produces several hormones like human chorionic gonadotropin (hCG), human placental lactogen (hPL), estrogens, progestogens, etc.

The corpus luteum secretes large amounts of progesterone which is essential for maintenance of the endometrium.

The Sertoli cells produce the hormone inhibin for a negative feedback mechanism. This inhibits the release of GnRH and FSH.