Why Are Plants Green? To Reduce the Noise in Photosynthesis.

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Scientists have finally discovered why plants are green. It has long been known that plants absorb almost all the photons in the red and blue regions of the light spectrum, but only about 90% of the green photons (leading to their green colour).This had led to the belief that green light might be too powerful for plants to use without harm, but the reason why has never been clear. In a recent article, scientists have built a model to explain why the photosynthetic machinery of plants wastes green light, and found that the reason is because the plant’s antenna complex is constantly moving. This movement brings noise and inefficiency into the system, meaning it cannot absorb all green light. Read full article here

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