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5.4 Plant hormones

5.4 Plant hormones

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Question 9
H

A root lies horizontally in the dark. Auxin builds up on the lower side of the root and the root then bends downwards. Which statement explains this?

[1]
A

Auxin inhibits cell elongation, so the lower side grows more slowly

B

Auxin inhibits cell elongation, so the upper side grows more slowly

C

Auxin increases cell elongation, so the lower side grows more quickly

D

Auxin increases cell elongation, so the upper side grows more quickly

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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