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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 8

What are the physical changes that occur in boys and girls during adolescence? - Science

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Question

What are the physical changes that occur in boys and girls during adolescence?

Answer in Brief

Solution

Secondary sex characteristics are the physical features which distinguish male from female. The Physical changes that occur is boys and girls during adolescence are:

  • Girls:
  1. Height and weight increase.
  2. Fatty and subcutaneous tissues develop.
  3. Hip broadens.
  4. Hair grows in the armpits and the pubic area.
  5. The voice becomes shrill.
  6. Breast develops.
  • Boys
  1. Height and weight increase.
  2. Muscles develop.
  3. Shoulder broadens.
  4. Hair grows in the armpits and pubic area, and facial hair also appears.
  5. Voice break takes place due to the lengthening of the vocal cord and enlarging of the larynx.
  6. Size of the penis increases.
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Nutritional Needs of Adolescents
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Chapter 20: Reaching the Age of Adolescence - Exercises [Page 242]

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Samacheer Kalvi Science [English] Class 8 TN Board
Chapter 20 Reaching the Age of Adolescence
Exercises | Q VI. 1. | Page 242
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