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2.3 Plant tissues, organs and systems

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Question 11
F

Why does an increase in the humidity of the air slow down transpiration?

[1]
A

The stomata close, so water vapour can no longer diffuse out

B

Less water evaporates because the air holds less water vapour

C

The guard cells become less turgid, so the stomata get narrower

D

The concentration gradient of water vapour out of the leaf is smaller

Markscheme

2.3 Plant tissues, organs and systems Questions

  1. GCSE
  2. /Biology
  3. /2.3 Plant tissues, organs and systems

38 exam-style questions on AQA GCSE Biology 2.3 Plant tissues, organs and systems, covering 2.3.1 Plant tissues and 2.3.2 Plant organ system. Each one has a worked solution and a mark scheme showing where the marks go.

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