Write two major functions of testis. ahprofessional Write two major functions of testis.2011-08-30T11:41:00+00:00 › Forums › Assignment Help › Write two major functions of testis. Tagged: Biology Assignment Help, Biology Homework Help This topic contains 1 reply, has 2 voices, and was last updated by john Smith 8 years, 2 months ago. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts August 30, 2011 at 11:41 am #1734 ahprofessionalParticipant Write two major functions of testis. August 30, 2011 at 11:41 am #10300 john SmithParticipant (a) They produce male gametes called spermatozoa by the process of spermatogenesis. (b) The leydig cells of the seminiferous tubules secrete the male sex hormone called testosterone. Testosterone aids the development of secondary sex characteristics in males. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic.