Name: (j) Regulates the functioning of the male and female reproductive organs.

Answer: Androgen (testosterone) in males and oestrogen in females.

• Androgen is secreted from testes in males and is mainly responsible for the growth of male reproductive organs, secondary sexual characters and for production of sperms.
• Oestrogen is secreted from the ovaries in females and are mainly responsible for the growth of female reproductive organs, and secondary sexual characters in females.