Too little light is fatal for plants. Every kind of plant must receive a certain minimum amount of light in order to survive. If the light level falls below this critical point, the plant starves to death because it is unable to produce sufficient starch. Too much light, on the other hand, can destroy the sensitive membranes responsible for photosynthesis, and consequently the plant itself. This is why plants are equipped with their own molecular solar protection. Specialized carotenoid molecules-which help to add color to fruits and flowers-transform excess radiation into heat and disperse it by means of evaporation.
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