Pls tell me the define of :-

Solution:

Spermiogenesis: It is the process of transforming spermatids into matured spermatozoa or sperms.

Spermiation: It is the process when mature spermatozoa are released from the sertoli cells into the lumen of seminiferous tubules.

Thus, Spermatogenesis is the production or development of mature spermatozoa. Whereas, Spermiation is the final step of spermatogenesis and involves the release of mature spermatids from Sertoli cells into the lumen of the seminiferous tubule.