4. Write two major functions each of testis and ovary.
Functions of the Testis
→ They produce male gametes called spermatozoa by the process of spermatogenesis.
→ The leydig cells of the seminiferous tubules secrete the male sex hormone called testosterone. Testosterone aids the development of secondary sex characteristics in males
Functions of the ovary
→They produce female gametes called ova by the process of oogenesis.
→The growing Graffian follicles secrete the female sex hormone called estrogen. Estrogen aids the development of secondary sex characteristics in females.
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