Class 7 Science — Chapter 6: A Stage of Growth and Change

What you'll learn

• ▸Understanding Adolescence
• ▸Physical Changes During Adolescence
• ▸Puberty and Secondary Sexual Characteristics
• ▸The Menstrual Cycle
• ▸Emotional and Behavioral Changes
• ▸Nutritional Needs During Adolescence

Chapter Summary

--- PAGE 1 --- Adolescence: 6 A Stage of Growth and Change 0777CH06 The journey of a plant generally begins with the germination of a seed. With proper nourishment, the seed becomes a sapling and matures into a young plant. This journey is marked by some specific changes. Some of the visible changes are an increase in its height, the appearance of more leaves, and the development of flowers, fruits, and new seeds. From these seeds, new plants emerge. It is quite unlikely that a seedling will develop the capabilities to produce its own seeds immediately after germination. It needs to grow and reach maturity to become capable of producing seeds. Similarly, animals also need to grow and reach maturity before they can reproduce. Some animals lay eggs that hatch into young ones, while others, like humans, directly give birth to young ones. In both cases, the young ones gradually grow in size and develop over time. NCERT Repo Adolescence Adolescence Puberty Adolescence Growth Maturity …

Practice Questions from this Chapter

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1. Describe how hormones cause growth spurts. Get Solution →
2. What triggers the Adam's apple to grow? Get Solution →
3. Clarify differences between adolescence and puberty. Get Solution →
4. What is the typical age range for adolescence as mentioned in the text? Get Solution →
5. What is the visible bump that may be seen in the throat region of adolescent boys called? Get Solution →
6. Which nutrient, found in spinach and kidney beans, helps in the formation of blood? Get Solution →
7. What is the stage of development between childhood and adulthood called? Get Solution →
8. What common skin condition mentioned in the chapter occurs due to an increase in oily secretions from the skin? Get Solution →

Did you know?

• 💡 The human brain is not fully mature until the mid-20s, affecting teenage decisions.
• 💡 Adolescent growth spurts can make bones grow faster than muscles, causing temporary clumsiness.
• 💡 A newborn baby has around 300 bones, which fuse into 206 by adulthood.
• 💡 Your skin completely replaces itself every 27 days, making it a constantly changing organ.
• 💡 All your body's cells are replaced every 7 to 10 years, making you physically a new person.

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