Biology Plant Responses 3.0 / 5 based on 1 rating ? BiologyGCSEAQA Created by: SunsetCreated on: 31-12-12 12:11 What is the name of the response to water? Hydrotropism 1 of 7 Why does the shoot have a positive phototropic response? To reach light to abosorb it for photosynthesis 2 of 7 In high concentrations, what affect does the hormone auxin have on the roots? It inhibits growth 3 of 7 In high concentrations, what affect does the hormone auxin have on the stems? Causes stem cells to elongate 4 of 7 Which stimulus is stronger for roots - gravity or water? Water 5 of 7 What are the commercial uses of plant hormones? Weedkillers and rooting powder 6 of 7 Why do the roots grow towards gravity? To reach minerals and water 7 of 7
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