Question

Process of maturation of spermatids into spermatozoa is known as
A. Spermatogenesis
B. Spermiogenesis
C. Oogenesis
D. Spermiation

Answer 1

Hint: Process of maturation of spermatids into spermatozoa is a part of spermatogenesis but there is a specific name given to this step as it is the final step of spermatogenesis.

Complete answer:
If we look at option A which is spermatogenesis. Spermato means sperms or spermatozoa and genesis means formation, so the definition is- The process of the formation of haploid spermatozoa from the spermatogonia is called spermatogenesis. It starts from mitotic division of the stem cells which are called as spermatogonial stem cells. These cells are divided mitotically into primary spermatocytes. Hence, this option cannot be the correct one as in the question process of maturation of spermatids is asked but in spermatogenesis, there is formation of spermatozoa from spermatogonia.
Moving to option B which is Spermiogenesis. It is the final stage of spermatogenesis where there is maturation of spermatids into mature spermatozoa. After the formation of mature spermatozoa, these sperms leave the seminiferous tubules in order to reach the epididymis. In epididymis they become motile and get stored for later release.
Moving to option C which is Oogenesis. It is a process of formation of ova from oogonium. Oogonium is divided mitotically into primary oocyte. This is not a process of formation of sperms and therefore it cannot be the correct answer and hence it gets eliminated.
Last option D is Spermiation. It is not a process of formation of spermatozoa but it is a process where there is the release of mature spermatids from the sertoli cells. Therefore, it cannot be the correct option and hence it gets eliminated.

Thus, the correct answer is option B which is spermiogenesis.

Note:
The process of formation of sperms from spermatogonia is called spermatogenesis and there are many steps in this process, the final step of this process is the maturation of spermatids into the spermatozoa. This final step of spermatogenesis is called spermiogenesis where there is final formation of sperms.