Arrange the following structures involved during spermatogenesis in correct sequence.
(A) Spermatozoa
(B) Spermatid
(C) Spermatogonia
(D) Secondary spermatocyte
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (C), (D), (B), (A)
(C) Spermatogonia — first. These are the diploid male germ cells lining the seminiferous tubules. They divide by mitosis, and some of them grow into primary spermatocytes.
(D) Secondary spermatocyte — second. The primary spermatocyte completes the first meiotic division and forms two equal, haploid secondary spermatocytes with 23 chromosomes each.
(B) Spermatid — third. The second meiotic division turns each secondary spermatocyte into two haploid spermatids.
(A) Spermatozoa — last. The spermatids change into sperms (spermatozoa) by spermiogenesis. The sperms are then released from the tubules by spermiation.
Note: A similar question was also asked in CUET (UG) 2026 on 07-06-2026 (Slot 2), on 15-05-2026 (Slot 1) and on 14-05-2026 (Slot 1), and in CUET (UG) 2025 on 20-05-2025 (Slot 2).
NCERT Extract:
Gametogenesis – “… 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).”
Gametogenesis – “… The spermatids are transformed into spermatozoa (sperms) by the process called spermiogenesis.”