Question: 161: Which of the following statements are true for spermatogenesis but do not hold true for Oogenesis?
(a) It results in the formation of haploid gametes
(b) Differentiation of gamete occurs after the completion of meiosis
(c) Meiosis occurs continuously in a mitotically dividing stem cell population
(d) It is controlled by the Luteinising hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary
(e) It is initiated at puberty
Choose the most appropriate answer from the options given below:
(1) (b), (d) and (e) only
(2) (b), (c) and (e) only
(3) (c) and (e) only
(4) (b) and (c) only
Answer: Option (2)
Explanation:
Statement (a) is true for both spermatogenesis and oogenesis because both processes produce haploid gametes by meiosis, so it does not distinguish spermatogenesis from oogenesis.
Statement (b) is true for spermatogenesis because differentiation of spermatids into spermatozoa,
called spermiogenesis, occurs after the completion of meiosis.
In oogenesis, differentiation occurs simultaneously with meiotic stages,
so this statement does not hold true for oogenesis.
Statement (c) is true for spermatogenesis because meiosis occurs continuously from puberty onward in a population of mitotically dividing spermatogonia.
In oogenesis, meiosis is discontinuous and begins during fetal life, not continuously.
Statement (d) is true for both spermatogenesis and oogenesis because both processes are regulated by LH and FSH secreted by the anterior pituitary, so it does not specifically apply only to spermatogenesis.
Statement (e) is true for spermatogenesis because it is initiated at puberty. Oogenesis begins during embryonic development and is not initiated at puberty.
Therefore, the statements that are true for spermatogenesis but not for oogenesis are (b), (c), and (e).