+Heliotropism is the exquisite daily motion of a plant or plant organ towards the sun's light. This form of [Phototropism](/wiki/phototropism) allows many species, like sunflowers, to optimize light absorption for [Photosynthesis](/wiki/photosynthesis).
+## See also
+- [Phototropism](/wiki/phototropism)
+- [Circadian Rhythm](/wiki/circadian_rhythm)
+- [Plant Hormones](/wiki/plant_hormones)
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