Question

Effect of uv radiation in plants

Answer 1

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UV
Ultraviolet light is invisible to the naked eye and is the shortest wavelength in the spectrum lying between 100 to 400 nm (micro moles). Before UV light reaches the earth’s surface, most of it is absorbed by the stratosphere mainly it is shield of O3 which help to stop the UV rays from coming in our habitable zone...


It is UV-R light that is most damaging to life forms.only 7-9% of it is able to reach the biosphere. For this reason, under normal conditions, UV light does not have a substantial impact on plant growth.

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Answer 2

Under high Photosynthetic active radiation, UV-B light increases the net plant photosynthesis in several plant species. Higher production of flavonoids can be induced under both UV-B and high PAR in young and old plant leaves. UV-A radiation has a positive effect on the photosynthesis when plants are exposed to UV-B.

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