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Meristems how do hormones control plant functions? What are auxins? uses gibberellins ethene stimulant positive negative What is phototropism? gravitropism or geotropism What controls the ripening of plants? gravitropic phototropic hydrotropic igcse/O
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Use of plant hormones - Plant hormones - Edexcel - GCSE Biology (Single Science) Revision - Edexcel - BBC Bitesize
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GCSE Biology Plant hormones called auxins are produced at the tips of roots and shoots. They are then distributed on the underside if gravity or light. - ppt download
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