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6.3 Plant hormones

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Question 35
H

A student measures the response of roots and shoots to an auxin concentration. Relative elongation without added auxin is 100% for both tissues.

Table

TissueRelative elongation with auxin
Root40%
Shoot160%

If this concentration occurs on only the left side of each vertical organ, which response is expected?

[1]
A

the root bends left and the shoot bends right

B

the root bends right and the shoot bends left

C

the root bends right and the shoot bends right

D

the root bends left and the shoot bends left

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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