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5.2 Plant and body defences

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Question 4
F

A scientist compares two groups of leaves of the same species. One group has an intact cuticle. The cuticle of the other group is scratched. Both groups receive the same number of fungal spores.

The scratched leaves develop more infections. Which explanation links the treatment to this result?

[1]
A

scratching opens the barrier, allowing fungi to reach living tissue

B

scratching thickens the barrier, allowing fungi to reach living tissue

C

scratching opens the barrier, preventing fungi from reaching living tissue

D

scratching thickens the barrier, preventing fungi from reaching living tissue

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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