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3.3 Plant disease

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Question 20

A crop adviser examines spinach plants whose leaves have developed chlorosis.

Which treatment is most likely to increase the amount of chlorophyll in the leaves?

[1]
A

Apply fertiliser containing magnesium ions

B

Spray the leaves with an antibacterial chemical

C

Apply fertiliser containing nitrate ions

D

Release ladybirds to feed on aphids

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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