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3.3 Plant disease

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Question 23

A bacterium causes disease in the stems of a crop. Nematode worms are feeding on the roots of the same crop.

Which statement correctly classifies the bacterium and the nematode worms?

[1]
A

The bacterium and the nematode worms are both pathogens.

B

The bacterium is a pest and the nematode worms are pathogens.

C

The bacterium is a pathogen and the nematode worms are pests.

D

The bacterium and the nematode worms are both pests.

Markscheme

3.3 Plant disease Questions

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

133 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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