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3.3 Plant disease

3.3 Plant disease

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Question 2
H

A gardener finds yellow patches on the leaves of a plant. Why can the gardener not be certain which pathogen is present?

[1]
A

The pathogen is destroyed by the plant before any sign appears

B

The same sign is produced by several pathogens and by ion deficiencies

C

Signs on the leaves develop too slowly to be matched to a pathogen

D

Yellow patches are a defence response rather than a sign of disease

Markscheme

3.3 Plant disease Questions

  1. GCSE
  2. /Biology
  3. /3.3 Plant disease

58 exam-style questions on AQA GCSE Biology 3.3 Plant disease, covering 3.3.1 Detection and identification of plant diseases and 3.3.2 Plant defence responses. Each one has a worked solution and a mark scheme showing where the marks go.

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