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In a Nutshell
| NCERT Point | Simple Meaning |
|---|---|
| Adolescence is the period of change from childhood to adulthood, beginning roughly around the age of 10-11 years and ending around 18-19 years. | Growing up time |
| The changes that occur during adolescence are collectively called puberty. | Body changing process |
| During puberty, various physical changes such as increase in height, change in body shape, voice change, development of sex organs occur. | Body grows differently |
| Hormones are chemical substances secreted by endocrine glands. | Body's chemical messengers |
| Testosterone is the male sex hormone and estrogen is the female sex hormone. | Boy and girl hormones |
| Menstruation is normal in girls/women, and it begins at puberty. | Monthly bleeding normal |
| The sex of an unborn child is genetically determined and depends on the sperm that fertilises the ovum. | Father determines baby's gender |
| Adolescents should take proper care of their reproductive health and maintain good hygiene. | Stay clean and healthy |
Quick Revision Table
| Term | Simple Meaning |
|---|---|
| Adolescence | Growing up period |
| Puberty | Body changing time |
| Teenagers | 13-19 year olds |
| Adam's apple | Voice box bump |
| Hormones | Chemical body messengers |
| Testosterone | Male hormone |
| Estrogen | Female hormone |
| Endocrine glands | Hormone making organs |
| Ovulation | Egg release process |
| Menstruation | Monthly bleeding cycle |
| Menarche | First period |
| Menopause | Periods stop permanently |
| Secondary sexual characteristics | Male-female body differences |
| Chromosomes | Genetic material carriers |
| Reproductive maturity | Ready to have babies |
