Question Details

The correct sequence of cell stage in spermatogenesis is

Options

A

Spermatocytes – Spermatids – Spermatogonia – Spermatozoa

B

Spermatogonia – Spermatocytes – Spermatids – Spermatozoa

C

Spermatogonia – Spermatids – Spermatocytes – Spermatozoa

D

Spermatocytes – Spermatogonia – Spermatids – Spermatozoa

Correct Answer :

Spermatogonia – Spermatocytes – Spermatids – Spermatozoa

Solution :

The correct option is: Spermatogonia – Spermatocytes – Spermatids – Spermatozoa.

Spermatogenesis is the process of formation of mature male gametes (spermatozoa) from the germ cells in the testes of males. This process occurs in a highly organized sequence of cellular stages:
1. Spermatogonia: These are the immature, diploid germ cells present on the inner wall of seminiferous tubules. They multiply by mitotic division to increase in number.
2. Spermatocytes: Some of the spermatogonia periodically undergo changes and accumulate food to form primary spermatocytes, which then undergo meiosis. The primary spermatocytes complete the first meiotic division to form secondary spermatocytes.
3. Spermatids: The secondary spermatocytes undergo the second meiotic division to produce four equal, haploid spermatids.
4. Spermatozoa: The spermatids are transformed into mature, motile male gametes called spermatozoa (sperms) by the process of spermiogenesis.

Therefore, the chronological sequence of cellular stages during spermatogenesis is Spermatogonia ⇒ Spermatocytes ⇒ Spermatids ⇒ Spermatozoa.

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