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5.2 Plant and body defences

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Question 26
H

Two groups of plants have yellow leaves. The table summarises further evidence.

Table

GroupSoil mineral supplyResult of a test specific to pathogen X
Pbelow the normal rangenegative
Qwithin the normal rangepositive

Which interpretation best uses all the evidence?

[1]
A

mineral shortage may explain P; pathogen X is present in Q

B

pathogen X is absent from Q; mineral shortage may explain P

C

mineral shortage explains both; pathogen X is absent from both

D

pathogen X explains both; mineral shortage is excluded from both

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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