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The Digestive and Excretory Systems

ICSE · Class 4 · Science

Quick revision notes for The Digestive and Excretory Systems — ICSE Class 4 Science. Key concepts, formulas, and definitions for last-minute revision.

45 questions30 flashcards4 concepts

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A detailed labeled diagram of the human alimentary canal and associated glandular organs (salivary glands, liver, pancreas).
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Key Topics to Revise

1

The Digestive System

  • Digestion starts in the mouth when we chew food with our teeth.
  • Saliva in the mouth softens food and starts breaking it down.
  • The tongue pushes chewed food into the food pipe (oesophagus).
2

The Excretory System

  • The excretory system removes waste from the body.
  • Main organs: Kidneys, ureters, urinary bladder, and urethra.
  • Kidneys filter blood and make urine.
3

Healthy Habits for Digestion and Excretion

  • Chew food properly to help digestion.
  • Eat a balanced diet with fruits, vegetables, and fibre.
  • Drink plenty of water every day — at least 6-8 glasses.

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Full Notes

Key Concepts

The digestive system breaks down foodThe excretory system removes waste fromWater helps digest food and keepsChewing food well

Frequently Asked Questions

What are the important topics in The Digestive and Excretory Systems for ICSE Class 4 Science?
Key topics in The Digestive and Excretory Systems include Journey of Food Through the Digestive System, Chapter Overview: The Digestive and Excretory Systems, Mind map showing the main functions and stages of the digestive system. These are the concepts ICSE Class 4 examiners draw on most — study them first, then practise related questions.
How to score full marks in The Digestive and Excretory Systems — ICSE Class 4 Science?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and 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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