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3.3 Plant disease

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Question 32

Young maize plants are grown in a solution containing very little magnesium. They photosynthesise more slowly than maize plants grown with enough magnesium.

Which change would best explain the lower rate of photosynthesis?

[1]
A

Less chlorophyll is produced

B

Less sugar moves in phloem sap

C

Less water is taken up by the roots

D

Less protein is produced

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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