BRAINCAKEGrowing inthe Dark
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 hormone that stimulates stem elongation and the breaking of seed dormancy and germination.
- Chlorophyll
- The main photosynthetic pigment, which absorbs light energy, exciting electrons that are used in the light-dependent reactions.
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- Tropisms
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All 19 lessons in Plant Responses · All OCR A-level Biology topics