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Young at heart

Autumn leaves

The mechanisms behind their changing colours

With fewer hours of daylight and cooler average daily temperatures as autumn rolls in, many trees provide us with a beautiful palette of colour. Plant biologist Lee Ball explains how and why this happens

© Acronym/stock.adobe.com

AQA Photosynthesis; Survival and response; Regulation of transcription

OCR A Plant and animal responses; Photosynthesis; Cellular control

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Young at heart

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