10. In boys there in growth of beard. have you
ever seen girls with a long or trimmed beard?
11. In boys
• Appearance of
moustaches and beard.
• Growth of hair on the
chest, under the arms
and pubic area.
In girls
• Development of
breasts.
• The growth of hair
under the arms and
the pubic area.
Secondary sexual characters
15. Characteristics of hormones
• Act as chemical
messengers.
• Secreted by living
cells/tissues or organs
called glands.
• Secreted in small very
small quantities.
• Act upon specific cells,
tissues, or organs called
target sites.