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5.2 Plant and body defences

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Question 8
F

Two groups of 50 leaves are exposed to a fungus. In the group with intact cuticles, 5 leaves become infected. In the group with damaged cuticles, 20 leaves become infected.

What is the difference between the percentages of leaves infected in the two groups?

[1]
A

15 percentage points

B

25 percentage points

C

40 percentage points

D

30 percentage points

Markscheme

5.2 Plant and body defences Questions

  1. GCSE
  2. /Biology
  3. /5.2 Plant and body defences

45 exam-style questions on Edexcel GCSE Biology 5.2 Plant and body defences, covering 5.2.1 Physical plant defences, 5.2.2 Chemical plant defences, 5.2.3 Detecting plant diseases, and 5.2.4 Human physical and chemical defences. Each one has a worked solution and a mark scheme showing where the marks go.

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