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In this live Gr 12 Life Sciences show we take a close look at Plant Hormones. In this lesson we list the functions of Auxins, Gibberellins and Abscisic acid. We describe the role of auxins in geotropism and phototropism. We describe the control of weeds using plant hormones. We state how chemicals and thorns are used by plants as defence. Finally, we compare the effects of plant hormones, animal hormones and the nervous system.
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