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6.3 Plant hormones

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Question 34
H

A student removes shoot tips and places blocks of agar containing auxin on one side of each cut surface. A preliminary test shows that this concentration stimulates shoot cell elongation. The shoots are kept vertically in darkness.

Which prediction is correct?

[1]
A

auxin on the right causes slower right-side elongation and leftward bending

B

auxin on the left causes faster left-side elongation and rightward bending

C

auxin on the left causes slower left-side elongation and rightward bending

D

auxin on the right causes faster right-side elongation and rightward bending

Markscheme

6.3 Plant hormones Questions

  1. GCSE
  2. /Biology
  3. /6.3 Plant hormones

46 exam-style questions on Edexcel GCSE Biology 6.3 Plant hormones, covering 6.3.1 Plant hormones and tropisms and 6.3.2 Commercial uses of plant hormones. Each one has a worked solution and a mark scheme showing where the marks go.

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