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Daily Problem·Tuesday, 6 January 2026Back to today

Apply chemical defence (H)

GCSE · Biology · AQA · B3.4Plant disease: detection and identification, defence responses, pathogens and ion deficiency symptoms

Question

(H7) Suggest why some plants synthesise nicotine. Refer to natural selection in your answer.

[Higher tier — 3 marks]

3 marks · take your time before peeking.

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