SEBA Class 7 Science MCQ Chapter 5 Growth and Changes During Adolescence

SEBA Class 7 Science MCQ Chapter 5 Growth and Changes During Adolescence Solutions English Medium As Per SCERT New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters SEBA Class 7 Science MCQ Chapter 5 Growth and Changes During Adolescence Notes and select need one. SEBA Class 7 Science Miltiple Choice Notes in English Download PDF. SCERT Class 7 Science Objective Type Solutions in English.

SEBA Class 7 Science MCQ Chapter 5 Growth and Changes During Adolescence

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Growth and Changes During Adolescence

Chapter: 5

PART – I

MCQ

Choose the Correct Option:

1. Which period of human life is called adolescence?

(a) Birth to 5 years.

(b) 11 to 18 or 19 years.

(c) 20 to 30 years.

(d) Above 60 years.

Ans: (b) 11 to 18 or 19 years.

2. Boys and girls during adolescence are called:

(a) Children.

(b) Adults.

(c) Adolescents.

(d) Old people.

Ans: (c) Adolescents.

3. The most noticeable change during adolescence is:

(a) Greying hair.

(b) Increase in height.

(c) Falling teeth.

(d) Change in nail colour.

Ans: (b) Increase in height.

4. The enlarged part in front of a boy’s throat is called:

(a) Voice box.

(b) Adam’s apple.

(c) Food pipe.

(d) Wind pipe.

Ans: (b) Adam’s apple.

5. The main cause of acne during adolescence is:

(a) Drinking less water.

(b) Overactivity of sebaceous (oil) glands.

(c) Excess sleep.

(d) Sun exposure.

Ans: (b) Overactivity of sebaceous (oil) glands.

6. Which is a secondary sexual character?

(a) Increase in height.

(b) Growth of beard and moustache in boys.

(c) Increase in weight.

(d) None.

Ans: (b) Growth of beard and moustache in boys.

7. The chemical substances controlling body changes are called:

(a) Enzymes.

(b) Proteins.

(c) Hormones.

(d) Vitamins.

Ans: (c) Hormones.

8. Hormones are secreted from:

(a) Heart.

(b) Brain.

(c) Endocrine glands.

(d) Stomach.

Ans: (c) Endocrine glands.

9. Menstrual cycle usually occurs after:

(a) 10–15 days.

(b) 28–30 days.

(c) 45–50 days.

(d) 60 days.

Ans: (b) 28–30 days.

10. The end of reproductive ability in women is called:

(a) Menopause.

(b) Menarche.

(c) Pregnancy.

(d) Adolescence.

Ans: (a) Menopause.

11. Menopause usually occurs at the age of:

(a) 30–35 years.

(b) 45–50 years.

(c) 60–70 years.

(d) 18–20 years.

Ans: (b) 45–50 years.

12. When the voice box enlarges in boys, the voice becomes:

(a) High pitched.

(b) Deep and hoarse.

(c) Same as before.

(d) None.

Ans: (b) Deep and hoarse.

13. An example of emotional change in adolescence:

(a) Increase in height.

(b) Sudden mood changes.

(c) Feeling hungry.

(d) Sleepiness.

Ans: (b) Sudden mood changes.

14. Balanced diet means:

(a) Only rice and pulses.

(b) Proper amount of protein, carbohydrate, fat, vitamins and minerals.

(c) Burger and pizza.

(d) Only fruits.

Ans: (b) Proper amount of protein, carbohydrate, fat, vitamins and minerals.

15. Which nutrient is necessary for blood formation?

(a) Calcium.

(b) Iron.

(c) Sodium.

(d) Iodine.

Ans: (b) Iron.