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6.3 Plant hormones

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Question 27

A houseplant producer prepares 240 coleus stem cuttings. Without auxin rooting powder, 45% of the cuttings are expected to fail to form roots. With the rooting powder, 15% are expected to fail to form roots.

How many fewer cuttings are expected to fail to form roots when the rooting powder is used?

[1]
A

168168168 cuttings

B

808080 cuttings

C

144144144 cuttings

D

727272 cuttings

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6.3 Plant hormones Questions

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

105 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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