Exercises · 2.16
Q.Identify True/False statements. Correct each false statement to make it true.
(a) Androgens are produced by Sertoli cells. (True/False)
(b) Spermatozoa get nutrition from Sertoli cells. (True/False)
(c) Leydig cells are found in ovary. (True/False)
(d) Leydig cells synthesise androgens. (True/False)
(e) Oogenesis takes place in corpus luteum. (True/False)
(f) Menstrual cycle ceases during pregnancy. (True/False)
(g) Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/False)
Sikkim CbseNCERTSubjective· 3mImportance★★★★★
21% · 16/77 Questions
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Start your 14-day free trial to unlock the full solution →This answer evaluates each statement about the human reproductive system as True or False, correcting the false ones based strictly on NCERT Class 12 Biology.
Let’s go through each statement one by one, grounding every correction in what the NCERT textbook actually says. The reproductive system is a beautifully coordinated network of cells, hormones, and organs, and these statements touch on some of its most commonly misunderstood details.
- Androgens are produced by Sertoli cells. (True/False) This is False. The NCERT textbook clearly states that androgens — the male sex hormones, primarily testosterone — are produced by the Leydig cells (also called interstitial cells), which are present in the spaces between the seminiferous tubules of the testes. Sertoli cells, on the other hand, are found inside the seminiferous tubules and have a completely different job: they provide nutrition to the developing spermatozoa and also secrete a hormone called inhibin. So the corrected statement would read: Androgens are produced by Leydig cells.
- Spermatozoa get nutrition from Sertoli cells. (True/False) This is True. NCERT explicitly mentions that Sertoli cells are responsible for nourishing the spermatozoa as they develop within the seminiferous tubules. Without these "nurse cells," the sperm cells would not get the nutrients they need to mature. So this statement is correct as given.
- Leydig cells are found in ovary. (True/False) This is False. Leydig cells are exclusive to the male reproductive system — specifically, they are located in the testes. In the female, the analogous hormone-producing cells are the theca interna cells of the ovarian follicle, which produce androgens that are then converted to oestrogen. But Leydig cells themselves are never found in the ovary. The corrected statement: Leydig cells are found in the testes.
- Leydig cells synthesise androgens. (True/False) This is True. As mentioned in part (a), the NCERT textbook confirms that Leydig cells synthesise androgens, particularly testosterone. This is a fundamental fact about male reproductive physiology. So this statement is correct.
- Oogenesis takes place in corpus luteum. (True/False) …
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