Question

Sequentially arrange the developmental stages of human spermatozoon : 
(A) Secondary Spermatocyte 
(B) Spermatid 
(C) Spermatozoa 
(D) Spermatogonia
(E) Primary spermatocytes
Choose the correct answer from the options given below :

• A. (E), (A), (D), (B), (C)
• B. (E) (A), (D), (C), (B)
• C. (E), (A), (C), (D), (B)
• D. (D), (E), (A), (B), (C)

Answer 1

The Correct Option is D

Spermatogenesis involves the creation of sperm in males, occurring within the seminiferous tubules located in the testes. During this process,
(a) Spermatogonia, located on the inner wall of the seminiferous tubules, undergo mitotic division, resulting in an increase in their numbers.
(b) Every spermatogonium is diploid, housing a total of 46 chromosomes.
(c) Spermatogonia that periodically undergo meiosis are termed primary spermatocytes.
(d) When a primary spermatocyte undergoes the first meiotic division, it results in the formation of two equal, haploid cells known as secondary spermatocytes, each containing only 23 chromosomes.
(e) Secondary spermatocytes proceed to undergo the second meiotic division, giving rise to four equal, haploid spermatids.
(f) Spermatids are transformed into spermatozoa (sperms) through the process known as spermiogenesis.
Now, let's see the diagram :

Hence, the correct sequence of spermatogenic stages culminating in the formation of sperm in a mature human testis is:
Spermatogonia - Primary spermatocytes - secondary spermatocytes - spermatids - spermatozoa
So, the correct option is (D) : (D), (E), (A), (B), (C).