Igcse Model Questions Vol1 2025 Biology Question 3

Practice essay / theory question 3 from the 2025 Igcse Model Questions Vol1 Biology examination. This question covers Human Nutrition, Digestive System .

Igcse Model Questions Vol1 2025 Biology Essay / Theory

Topics: Human Nutrition Digestive System

Question 3 IGCSE_MODEL_QUESTIONS_VOL1 • 2025 • BIOLOGY • essay

The diagram shows the main parts of the human digestive system.

Question Parts

( a )

Identify each numbered part in the diagram by writing its correct name.

( b )

For each organ you identified, describe its principal role in the digestion and absorption of nutrients.

( c )

Explain how the structure of the small intestine is adapted to maximise nutrient absorption.

( d )

A person changes from a diet high in carbohydrates to one high in protein. Discuss two physiological changes in the digestive system that would occur to accommodate the new diet.

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About This Question

This is Igcse Model Questions Vol1 2025 Biology Question 3. It is one of the essay questions from the 2025 Igcse Model Questions Vol1 Biology examination.

The question covers Human Nutrition, Digestive System .

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