Biological importance of ozone layer is (a) it stops ultraviolet rays (b) ozone layer reduces green house effect (c) ozone layer reflects radio waves (d) ozone layer controls O2/H2 ratio in atmosphere.

Answer: (a). The ozone layer absorbs most of the Sun's harmful ultraviolet radiation. UV causes skin cancer, eye damage and harm to living cells. So the answer is (a) it stops ultraviolet rays.

Biological importance of ozone layer is | NEET 2001 (AIPMT)

Q40NEET 2001 · AIPMTEasy

Electromagnetic Spectrum & Atmosphere

Biological importance of ozone layer is

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Answer: (a)

The ozone layer absorbs most of the Sun's harmful ultraviolet radiation.
UV causes skin cancer, eye damage and harm to living cells.
So the answer is (a) it stops ultraviolet rays.

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Electromagnetic Spectrum & Atmosphere question from NEET 2001 (AIPMT)

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