Arrange the given structures in correct sequence of spermatogenesis?(…

The correct answer is Option (4) → (C), (B), (D), (A)

(C) Spermatogonia — first. Diploid spermatogonia on the inner wall of the seminiferous tubules multiply by mitosis; some become primary spermatocytes.

(B) Secondary spermatocytes — second. Meiosis I of a primary spermatocyte gives two haploid secondary spermatocytes.

(D) Spermatids — third. Meiosis II gives four haploid spermatids.

(A) Spermatozoa — fourth. Spermatids change into sperms by spermiogenesis.

Note: The same question was also asked in CUET (UG) 2025 on 15-05-2025 (Slot 1), and a similar question in CUET (UG) 2026 on 07-06-2026 (Slot 2), on 26-05-2026 (Slot 2), on 22-05-2026 (Slot 2), on 20-05-2026 (Slot 2) and on 14-05-2026 (Slot 1), and in CUET (UG) 2025 on 28-05-2025 (Slot 1), on 27-05-2025 (Slot 2) and on 20-05-2025 (Slot 2).

NCERT Extract:
Gametogenesis – “The primary sex organs – the testis in the males and the ovaries in the females – produce gametes, i.e, sperms and ovum, respectively, by the process called gametogenesis. In testis, the immature male germ cells (spermatogonia) produce sperms by spermatogenesis that begins at puberty. The spermatogonia (sing. spermatogonium) present on the inside wall of seminiferous tubules multiply by mitotic division and increase in numbers. Each spermatogonium is diploid and contains 46 chromosomes. Some of the spermatogonia called primary spermatocytes periodically undergo meiosis. A primary spermatocyte completes the first meiotic division (reduction division) leading to formation of two equal, haploid cells called secondary spermatocytes, which have only 23 chromosomes each. The secondary spermatocytes undergo the second meiotic division to produce four equal, haploid spermatids (Figure 2.5). … The spermatids are transformed into spermatozoa (sperms) by the process called spermiogenesis.”