Tropisms and Hormones

Plants can respond quickly to stimuli, but most responses are slow and growth-based, known as tropisms. Key tropisms include phototropism, geotropism, and hydrotropism, which direct growth towards light, gravity, and water, respectively. Auxin, a plant hormone, plays a crucial role in these growth responses by accumulating on the shaded side of a plant, causing it to bend towards light. Understanding auxin's effects allows us to use it in rooting powders and to increase fruit yields, highlighting the importance of tropisms in plant survival.

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