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Cambridge IGCSE Biology practice

Paper 3 structured question: Transpiration

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3

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1

Marks

Topic

Transpiration

Exam-style question

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Paper 3Theory (Core)1 marks

Water movement in leaves

Diagram Description

Diagram of a leaf cross-section

The diagram shows mesophyll cells surrounded by air spaces and stomata on the leaf surface.

  1. a

    State where water evaporates inside the leaf.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Transpiration

Paper 3Theory (Core)2 marks

Description

Water vapor diffusion

Water vapor moves from inside the leaf to the outside air through stomata.

  1. a

    Identify the pathway water vapor takes from mesophyll cells to outside the leaf.

    Aim for approximately 2 distinct marking points.

    [2]