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Syllabus

Nutrition — Syllabus

ICSE · Class 9 · Biology

What Nutrition covers in ICSE Class 9 Biology: 4 topics, for the 2026-27 session. Part of the ICSE Class 9 Biology syllabus.

42 questions40 flashcards4 formulas & key relations5 concepts

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An infographic illustrating the six main purposes of nutrition for living organisms: growth, repair, energy, maintenance of chemical composition, provision of raw materials for secretions, and protect
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4 Topics · ICSE Class 9 Biology · 2026-27

Topics in Nutrition

1

1. Basic ideas: nutrition, food, and diet

  • Nutrition is the supply of essential chemical compounds to the body.
  • Food is any substance eaten or drunk that contains nutrients.
  • Diet is the combination of food items eaten in meals.
2

2. Classes of nutrients

  • The six classes of food substances are carbohydrates, fats, proteins, mineral salts, vitamins, and water.
  • Carbohydrates and fats mainly provide energy.
  • Proteins are needed for growth and repair.
3

3. Carbohydrates: sugars, starch, cellulose, and glycogen

  • Carbohydrates are compounds of carbon, hydrogen, and oxygen with hydrogen and oxygen in the ratio 2:1.
  • Monosaccharides are simple sugars and have the general formula C6H12O6.
  • Glucose is the simplest and most common sugar and is called grape-sugar.
4

4. Fats, proteins, and energy value

  • Fats contain carbon, hydrogen, and oxygen, but with much less oxygen than carbohydrates.
  • One mole of fat releases 9.45 Kcal of energy, which is more than carbohydrates.
  • Fats store energy and also act as a solvent for fat-soluble vitamins.

Key Concepts

Central concept: Nutrition as the supply of essential nutrients to the body for growth, repair, energy, protection, and proper functioning

Nutrition, food and dietNeed of nutritionClasses of nutrientsCarbohydratesSugarsProteinsFatsMineral salts

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Frequently Asked Questions

What are the important topics in Nutrition for ICSE Class 9 Biology?
Key topics in Nutrition include Basic ideas: nutrition, food, and diet, Classes of nutrients, Carbohydrates: sugars, starch, cellulose, and glycogen, Fats, proteins, and energy value. Study these first, then practise questions on each for Class 9 exams.
How should I revise Nutrition for Class 9 exams?
Learn the core ideas first, then work through the 42 practice questions on Nutrition. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 9 Biology Syllabus

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