SEBA Class 7 Science Chapter 5 Growth and Changes During Adolescence

SEBA Class 7 Science 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 Chapter 5 Growth and Changes During Adolescence Notes and select need one. SEBA Class 7 Science Textual Notes Download PDF. SCERT Class 7 Science New Textbook Question Answer in English.

SEBA Class 7 Science Chapter 5 Growth and Changes During Adolescence

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Growth and Changes During Adolescence

Chapter: 5

PART – I

EXERCISES

1. Darken the circle of correct answers.

(i) Both Anup and Iqbal are about 12 years old. Anup’s voice has started deeper and hoarser, while Iqbal’s voice hasn’t changed yet. What is the correct explanation for this?

(a) Anup is not healthy.

(b) Iqbal will never experience this change.

(c) The timing and pace of changes during adolescence vary from person to person.

(d) Voice change only happens to some boys.

Ans: (c) The timing and pace of changes during adolescence vary from person to person.

(ii) Which of the following is a secondary sexual characteristic in boys?

(a) Widening of hips.

(b) Start of menstruation.

(c) Growth of facial hair.

(d) Development of breasts.

Ans: (c) Growth of facial hair.

(iii) Rani is an adolescent girl. Recently, she has been feeling frequently confused and sometimes getting upset for no reason. What should she do to manage these emotional changes positively?

(a) Stay alone

(b) Keep feelings to herself.

(c) Participate in activities like music or sports, and talk to a trusted adult.

(d) Spend more time on social media.

Ans: (c) Participate in activities like music or sports, and talk to a trusted adult.

(iv) What may be the effect of excessive use of digital devices during adolescence?

(a) Improves sleep.

(b) Harms health.

(c) Make adolescents more social.

(d) Improves concentration in their studies.

Ans: (b) Harms health.

2. Fill in the Blanks:

(i) _________ is the stage in which the body of an adolescent undergoes internal and external changes to develop into an adult capable of reproduction.

Ans: Puberty.

(ii) __________ are features that help to distinguish males and females but are not directly involved in reproduction.

Ans: Secondary sexual characteristics.

3. State with reason(s) whether the following statements are True [T] or False [F].

(i) The timing and pattern of hair growth on the body are different for every adolescent. []

Ans: True. The sources explicitly state that the timing and pattern of hair growth may vary from person to person and that this variation is normal.

(ii) Girls can carry out daily activities during their periods. []

Ans: True. Menstruation is a natural process and does not make girls weak or unfit for activity; scientific work has shown that girls can stay healthy and active during their periods.

(iii) In women, menstruation continues for the whole life. []

Ans: False. Menstruation stops naturally when a woman reaches between 45 to 55 years of age, marking the stage called menopause.

4. Solve the crossword puzzle.

Down:

1. The stage when the body develops into an adult capable of reproduction.

2. The stage of menstrual cycle when blood flows from the body of an adolescent girl.

3. Special chemicals made in the body that control growth and changes during adolescence.

6. The special stage of life between childhood and adulthood.

7. The stage in women’s life when periods stop naturally.

Across:

4. A nutrient in food that prevents anemia.

5. An addictive and harmful substance that comes in forms like cigarettes, “beedi’, or ‘gutka.

8. Harassing others using digital tools, social media and online platform.

9. Menstruation is commonly known as ________.

10. A common skin condition during adolescence caused by oily secretions blocking skin pores.

Ans: Down:

1. Puberty.

2. Menstruation.

3. Hormones.

6. Adolescence.

7. Menopause.

Across:

4. Iron.

5. Tobacco.

8. Cyberbullying.

9. Periods.

10. Acne.