SAQ for Chapter 6 Adolescence: A Stage of Growth and Change Class 7 Science NCERT
Important Questions1
Q1: What is adolescence?
Answer
Adolescence is the stage of growth and development between childhood and adulthood, typically occurring between the ages of 10 and 19. It involves rapid physical, emotional, and behavioral changes.
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2
Q2: At what age does adolescence generally start?
Answer
Adolescence generally starts around the age of 10 years.
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3
Q3: What is puberty?
Answer
Puberty is the stage in adolescence when the body undergoes external and internal changes to develop into an adult capable of reproduction.
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4
Q4: What is the role of hormones during adolescence?
Answer
Hormones regulate various aspects of growth and development during adolescence, influencing physical, emotional, and behavioral changes.
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5
Q5: What are secondary sexual characteristics?
Answer
Secondary sexual characteristics are traits that help distinguish males from females, like the development of breasts in girls or facial hair in boys, which mark the onset of puberty.
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6
Q6: How does the voice change during adolescence in boys?
Answer
In adolescent boys, the voice box grows, leading to a hoarse voice. This is visible as the development of the Adam’s apple.
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7
Q7: What is menstruation, and when does it start?
Answer
Menstruation is the process where adolescent girls experience a monthly discharge of blood from the uterus, marking the onset of reproductive capability, typically starting around the age of 12.
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8
Q8: Why do acne and pimples appear during adolescence?
Answer
Acne and pimples appear during adolescence due to an increase in oily secretions from the skin, which can clog pores and lead to infections.
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9
Q9: How do boys and girls differ in terms of body changes during adolescence?
Answer
Boys typically experience the development of a deeper voice, facial hair, and broader shoulders. Girls experience changes like breast development and wider hips, along with a menstrual cycle.
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10
Q10: What is the importance of a healthy diet during adolescence?
Answer
A healthy diet is crucial during adolescence as it supports rapid growth and development, providing essential nutrients like proteins, vitamins, and minerals for optimal physical and mental health.
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