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Explaining The Universe on Instagram: "Positive phototropism is the growth response of a plant toward a light source. It occurs when a plant detects light on one side, causing plant hormones called auxins to move to the shaded side of the stem. These hormones make the cells on the darker side elongate more than those on the side facing the light, which causes the plant to bend toward the light source. This natural behavior helps the plant maximize its exposure to sunlight, allowing it to perform
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