Chapter 10 : Reaching the Age of Adolescence
Q. Define adolescence.
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Q. What are sex hormones? Why are they named so? State their function
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Q. The table below shows the data on likely heights of boys and girls as they grow in age. Draw graphs showing height and age for both boys and girls on the same graph paper. What conclusions can be drawn from these graphs?
| Age (Years) | Height (cm) Boys | Height (cm) Girls |
| 0 | 53 | 53 |
| 4 | 96 | 92 |
| 8 | 114 | 110 |
| 12 | 129 | 133 |
| 16 | 150 | 150 |
| 20 | 173 | 165 |
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Q.
What is menstruation? Explain.
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Q. Prepare a table having two columns depicting names of endocrine glands and hormones secreted by them.
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Q. Choose the correct option.
(a) Adolescents should be careful about what they eat, because
(i) proper diet develops their brains.
(ii) proper diet is needed for the rapid growth taking place in their body.
(iii) adolescents feel hungry all the time.
(iv) taste buds are well developed in teenagers.
(b) Reproductive age in women starts when their
(i) menstruation starts.
(ii) breasts start developing.
(iii) body weight increases.
(iv) height increases.
(c) The right meal for adolescents consists of
(i) chips, noodles, coke.
(ii) chapati, dal, vegetables.
(iii) rice, noodles and burger.
(iv) vegetable cutlets, chips and lemon drink.
(a) Adolescents should be careful about what they eat, because
(i) proper diet develops their brains.
(ii) proper diet is needed for the rapid growth taking place in their body.
(iii) adolescents feel hungry all the time.
(iv) taste buds are well developed in teenagers.
(b) Reproductive age in women starts when their
(i) menstruation starts.
(ii) breasts start developing.
(iii) body weight increases.
(iv) height increases.
(c) The right meal for adolescents consists of
(i) chips, noodles, coke.
(ii) chapati, dal, vegetables.
(iii) rice, noodles and burger.
(iv) vegetable cutlets, chips and lemon drink.
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Q.
What is the term used for secretions of endocrine glands responsible for changes taking place in the body?
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Q. Write notes.
(a) Adam's apple.
(b) Secondary sexual characters.
(c) Sex determination in the unborn baby.
(a) Adam's apple.
(b) Secondary sexual characters.
(c) Sex determination in the unborn baby.
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Q. List changes in the body that take place at puberty.
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