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Learning objective

Indicate that water evaporates from mesophyll cell surfaces into air spaces and then diffuses out of leaves through stomata as vapor.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE BiologyTransport in plantsCore content

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Quick explanation

Indicate that water evaporates from mesophyll cell surfaces into air spaces and then diffuses out of leaves through stomata as vapor

  • This point belongs to Transpiration, especially Transpiration outcomes.
  • You need to be able to indicate that water evaporates from mesophyll cell surfaces into air spaces and then diffuses out of leaves through stomata as vapor.
  • The key ideas to know are State.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

This objective helps connect Transpiration outcomes to exam-style questions, flashcards, and revision notes for Transpiration.

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Flashcards10 linked cards

Flashcard 1 of 10

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Practice Questions7 linked questions

Question 1 of 7

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0 of 5 attempted

Paper 3 structured question: Transpiration

Paper 3Theory (Core)1 marks

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]
Revision notestopic notes

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