CBSE Science Class 8

Reaching the Age of Adolescence

Reaching the Age of Adolescence - Chapter Wise CBSE Solved Question and Answer Based On NCERT

Points To Remember:

  • Human beings become capable of reproduction after the puberty sets in. The period of life when the body undergoes changes, leading to reproductive maturity, is called adolescence
  • Between the age of 11 years and 19 years children are called adolescents.
  • The human body undergo several changes during adolescence; these changes mark the onset of puberty
  • The onset of puberty brings about growth of reproductive organs, hair grows at various body parts, breast develops in girls and moustache and beard in boys.
  • Children gain height during the period of adolescence
  • The changes which occur during adolescence are controlled by hormones which are secreted by endocrine glands
  • The first menstrual flow in women begins at puberty and is termed as menarche, it stops at the age of 45 to 50 and stopping of menstruation is called menopause
  • Testosterone is the male hormone and estrogen is the female hormone
  • Sex of the unborn child depends on whether the zygote has XX or XY chromosomes
  • It is important to eat balanced food and maintain personal hygiene during adolescence



Chapter 10 Reaching the Age of Adolescence