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Why does algae not produce oxygen in ultra violet and infra red light I tried to experiment with this and the oxygen level actually reduced and did not increase in normal light?
Checkeredscarf
The maximum amount of energy that our sun gives out is in the yellow range of the spectrum, therefore it has been to the advantage of algae (and all other photosynthetic organisms) to specialize in this particular frequency. Ultra-violet has more energy of course but as the atmosphere filters out much of this it isn't energy efficient to specialize in this colour. There is lots of infra-red radiation around but it is of a low energy quantum and therefore doesn't give a high 'energy return' on being absorbed.
Now there are some organisms that do utilized both infra-red and ultra violet. Extremeophilles that live in volcanic geysers use heat (IR) exclusively. Human beings use UV to manufacture their Vitamin D. Algae however is a yellow range specialist.
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