Name two things which may develop on the face of adolescent boy s and girls during puberty due to the increased activity of sebaceous glands and sweat glands in the skin.

What change in the voice of body takes place when they reach puberty? What is the cause of this change?

Name two male sex organs and two female sex organs which develop completely at puberty.

State two secondary sexual characteristics in mature boys and two in mature girls.

Which of the following are secondary sexual characteristics?

Ovaries, Moustache, Penis, Broad hips, Vagina, Beard, Breast, Adam’s Apple, Wide shoulders, uterus, Testes, Deeper voice.