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5.4 Plant hormones

5.4 Plant hormones

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Question 7
H

The figure shows a young shoot that has been lit from one side only for 24 hours. Each dot shows a molecule of auxin.

Figure: The distribution of auxin in a young shoot before and after it was lit from one side only for 24 hours

image

a.

Describe the distribution of auxin in the shoot after 24 hours.

[1]
b.

Explain how this distribution of auxin makes the shoot bend towards the light.

[3]
c.

Give one advantage to the plant of this response.

[1]
Markscheme

5.4 Plant hormones Questions

  1. GCSE
  2. /Biology
  3. /5.4 Plant hormones

59 exam-style questions on AQA GCSE Biology 5.4 Plant hormones, covering 5.4.1 Control and coordination and 5.4.2 Use of plant hormones (HT only). Each one has a worked solution and a mark scheme showing where the marks go.

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