Plant hormones

3 lessons in Homeostasis and response.

18 exam questions · 45 marks

5.24 Auxin and tropisms How unequal amounts of auxin make shoots grow towards light and roots grow towards gravity, and what gibberellins and ethene do in plants. Separate only AQA Edexcel OCR 6 questions 5.25 Investigating plant growth responses How to investigate the effect of light or gravity on newly germinated seedlings: methods, variables, measurements, biological drawings and evaluation. Separate only AQA Edexcel OCR 6 questions 5.26 Uses of plant hormones How people use auxins (weedkillers, rooting powders, tissue culture), gibberellins (dormancy, flowering, bigger and seedless fruit) and ethene (ripening) in farming and food. Higher only Separate only AQA Edexcel OCR 6 questions