Question

why testis and ovary are considered as the primary sex organs.

Answer 1

Both ovaries and testes produce hormones, along with the production of ovum and sperm, respectively.

Testes produce testosterone while, ovaries produce oestrogen and progesterone.

These hormones are responsible for control and onset of the whole reproduction process.

Hence, ovaries in females and testes in males are called as primary sex organs.

Answer 2

Becase the testis and ovaries  both are secrete the harmones ... Sperm and ovum .. The testis secrt testosterone harmones and the ovaries secret oestrogen ..