Arrange the following structures of spermatogenesis in the correct se…

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

(B) Spermatogonia — First. These are the diploid male germ cells (46 chromosomes) on the inside wall of the seminiferous tubules. They multiply by mitosis.

(A) Primary spermatocyte — Second. Some spermatogonia become primary spermatocytes. These are still diploid, and they enter meiosis.

(D) Secondary spermatocyte — Third. The first meiotic division (reduction division) gives two haploid secondary spermatocytes. Each has 23 chromosomes.

(C) Spermatid — Fourth. The second meiotic division gives four haploid spermatids. These later change into sperms by spermiogenesis.

Note: A similar question was also asked in CUET (UG) 2026 on 07-06-2026 (Slot 2) and on 06-06-2026 (Slot 1).

NCERT Extract:
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).”