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Growing inthe Dark

AQA A-level BiologyPlant ResponsesLesson 14 of 19

Plants grow more quickly in the dark. The plants grow rapidly in order to reach the light. It is thought that gibberellins are responsible for cell elongation at the internodes.

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Key terms in this lesson

gibberellin
A plant growth hormone that stimulates stem elongation, breaks seed dormancy and triggers the mobilisation of food stores during germination.

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