8. Write notes on—
(b) Secondary sexual characters.
Secondary sexual characters-
Those features that help to distinguish the male from the female are called their secondary sexual characters. These mostly include physical features which can be visualized in humans at the age of puberty.
Secondary sexual characters in boys include growing of moustaches and beard, appearance of chest hair and also hair growth in the pubic region and other parts of the skin.
Secondary sexual characters in girls include increase in breast size, growth of hair in the genital area and other parts of the skin.