Reaching the Age of Adolescence — Science STD 8 — Question

At puberty, the body undergoes the following changes
(i) Boys and girls become capable of reproduction.
(ii) Sudden increase in height.
(iii) Broad shoulders and wide chests in boys and region below the waist becomes wider in girls.
(iv) Growth of hairs on different parts of the body.
(v) Voice of girls becomes high pitched and that of boys becomes deep.
(vi) Secretions of sweat and sebaceous glands increase.
(vii) Sex organs become active. In boys, testes start to form sperms and in girls, ovaries enlarge and eggs begin to mature.
(viii) Changes at mental, intellectual and emotional level.