What are cells derived from secondary spermatocytes that differentiate into mature sperm called?

Cells derived from secondary spermatocytes that differentiate into mature sperm are called spermatids. This is a specific stage in the process of spermatogenesis, which is the development of sperm cells.

The secondary spermatocytes undergo meiosis to produce spermatids, which are haploid cells. These spermatids then undergo a series of morphological changes, including the formation of a tail and the condensing of nuclear material, becoming streamlined and specialized for motility. The maturation of spermatids into fully developed sperm is crucial for successful fertilization.

In contrast, sperm (spermatozoa) refers to the final, mature form of the cell after the spermatid stage has been completed, which makes this choice incorrect when referring specifically to the cells directly derived from secondary spermatocytes. Species and solvent have no relevance to the process of spermatogenesis, making them unrelated to the question.