B1 - Controlling Plant Growth 0.0 / 5 ? BiologyPlantsGCSEOCR Created by: Amy_2811Created on: 02-10-16 18:17 What is phototropism? A plants response to light 1 of 7 What is geotropism? A plants response to gravity 2 of 7 How do shoots respond to light and gravity? Positively phototropic/negatively geotropic 3 of 7 How do roots respond to light and gravity? Negatively phototropic/positively geotropic 4 of 7 What are auxins? Plant hormones that are made in the root and shoot tip 5 of 7 What does auxin do? Collects on shady side of plant/elongates cells/causes curvature towards light 6 of 7 Name four commercial uses of plant hormones? Selective weed killers/rooting powder/delay or accelerate fruit ripening/control dormancy in seeds 7 of 7
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