Plants Tropism 0.0 / 5 ? SciencePlantsGCSEAll boards Created by: yasmin_leighCreated on: 12-03-16 11:41 What are auxins? A family of hormones found in plants. 1 of 8 What is a tropism? A tropism is a growth in response to a stimulus which controls the direction of growth. 2 of 8 What is phototropism? It is a tropism caused by light. 3 of 8 What is geotropism? A tropism caused by gravity. 4 of 8 What are the uses of plant hormones? *Rooting powder *Selective weedkillers *Fruit ripening Ethane *Neater hedges *Dormancy in seeds 5 of 8 What do plants compete for? *Sunlight *Water *Space *Nutrients 6 of 8 What does the sunlightdo to auxins? It breaks auxins down. 7 of 8 What is a hormone? A chemical message. 8 of 8
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