The process of conversion of non-motile spermatids into motile spermatozoa is called
a. Spermiogenesis
b. Oogenesis
c. Sporogenesis
d. Spermatogenesis

Hint: The male gamete which can result from the division of secondary spermatocytes is called a spermatid. It is said that every spermatid comprises only half of the genetic material which is present in the original primary spermatocyte due to the process of meiosis. We can say that the Spermatids are connected by cytoplasmic material. They in turn have superfluous cytoplasmic material around their nuclei.

Complete answer:
In general, the round spermatids must experience more maturational events to progress into spermatozoa when they form.
The immature non-motile spermatids get to Differentiate into motile sperms. This process is called spermiogenesis. A part of the sperm which is a more or less circular cell containing a nucleus is called spermatid. Cell organelles like the Golgi apparatus, centriole, and mitochondria are also a presence in it.

The process of Oogenesis includes the differentiation of the sex cell ovum into a cell competent to further develop when it is fertilized. The Oogenesis is also known as the ovogenesis or oogenesis. The primary oocyte develops the sex cell by the process of maturation.

In terms of biology, the process of the production of spores is known as Sporogenesis. The term Sporogenesis is also made use in order to refer to the process of reproduction by means of spores.

We can say that the process by which haploid spermatozoa progress from the germ cells on being in the seminiferous tubules of the testis is called Spermatogenesis. The mitotic dissection of the stem cells positioned close to the basement membrane of the tubules is the start of this process.

Hence, the correct answer is option (A).

Note: The bottom part of the seminiferous tubules is the start of the process of spermatogenesis. The cells go deeper into tubes and move along it progressively till mature spermatozoa scope the lumen. The lumen is the place where the mature spermatozoa are deposited. If the tubes are cut transversely one could perceive different maturation states, it results in asynchronous division.