Ans.Gonads ,
Testes (Singular testis) and ovaries are the male and female reproductive organs i.e. gonads: In addition to producing gametes, gonads also secrete hormones, called sex hormones.
Hormones
Testes secrete hormones e.g. testosterone.
Function
It is responsible for the development of male secondary, sex characters such as growth of hair on face and coarseness of voice etc.
Ovaries secrete estrogen and progesterone,
Function
It is responsible for the development of female secondary characters such as the development of breast etc.