Cambridge IGCSE Biology practice

Paper 3 structured question: Leaf structure

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Paper

Marks

Topic

Leaf structure

Exam-style question

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Paper 3Theory (Core)4 marks

Leaf adaptations for photosynthesis

Diagram Description

The diagram shows a leaf with a large surface area and thin structure. These features help the leaf perform photosynthesis effectively.

a
Identify two adaptations of leaves that help photosynthesis.
Your answer
Aim for approximately 2 distinct marking points.
[2]
b
Explain how these adaptations help photosynthesis.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 3Theory (Core)3 marks

Description

Most leaves have a large surface area and are thin in structure. These features help the leaf carry out photosynthesis efficiently.

a
State one way in which a large surface area helps photosynthesis.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
Explain why a thin leaf structure is an advantage for photosynthesis.
Your answer
Aim for approximately 2 distinct marking points.
[2]