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.

AcademicBiologyNCERTClass 8

Correct Answer:

(a) Adolescents should be careful about what they eat, because (ii) a proper diet is needed for the rapid growth taking place in their body.

(b) Reproductive age in women starts when their (i) menstruation starts.

(c) The right meal for adolescents consists of (ii) chapati, dal, vegetables.

Adolescence:

The period of life when the body undergoes changes leading to reproductive ability is called adolescence.

In humans, adolescence starts at 11 years and lasts up to 19 years of age. Since this period covers the teens, i.e. 13 to 19 years, adolescence is also known as teenage and adolescents are also called teenagers.

The number of changes takes place in boys and girls during adolescence due to sex hormones.

Changes that occur during adolescence are as follows:

  • Increased growth and sudden increase in height
  • Growing pubic and underarm hair
  • Secretion of oil glands and acne formation
  • In boys, growth in facial hair and deepening of voice is noted
  • In girls, breast development and initiation of menstruation occur.
raja
Updated on 10-Oct-2022 12:46:50

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