Plants can see (light perception and response), through photoreceptors like phytochromes, cryptochromes, and phototropins that allow them to detect and respond to light intensity, direction, and quality.
This has formed the basis of our understanding of how they use this information to orient themselves toward light (phototropism), regulate flowering, and optimize photosynthesis.
Experiment: Charles Darwin and his son Francis conducted early studies on phototropism in plants. They observed that covering the tip of a coleoptile (young grass shoot) prevented it from bending toward light. Later, the discovery of auxins explained how light causes hormonal redistribution, prompting the plant to bend. (Darwin, C. and Darwin, F., The Power of Movement in Plants, 1880).
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Plant Fact: Plants Can See
