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3.1 Communicable diseases

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Question 44
F

A grower has two fields of tomato plants. TMV has been found in field 1 but not in field 2. On the same day, the grower walks through field 1 and then through field 2, handling plants in both fields.

a.

Suggest why plants in field 2 may become infected with TMV.

[2]
b.

Suggest two changes the grower could make to their routine to reduce the risk of spreading TMV between the fields.

[2]
c.

TMV is also carried from plant to plant by insects.

  • Suggest why controlling these insects does not remove the risk of TMV completely.
[1]
d.

Explain why the grower cannot treat the infected plants in field 1 with a medicine.

[1]
Markscheme

3.1 Communicable diseases Questions

  1. GCSE
  2. /Biology
  3. /3.1 Communicable diseases

176 exam-style questions on AQA GCSE Biology 3.1 Communicable diseases, covering 3.1.1 Communicable (infectious) diseases, 3.1.2 Viral diseases, 3.1.3 Bacterial diseases, 3.1.4 Fungal diseases, 3.1.5 Protist diseases, 3.1.6 Human defence systems, 3.1.7 Vaccination, 3.1.8 Antibiotics and painkillers, and 3.1.9 Discovery and development of drugs. Each one has a worked solution and a mark scheme showing where the marks go.

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