Q43 / 230 · NTA Abhyas (NEET) 2020 · Botany · Environmental Issues

Select the incorrect statement from the following.

  • A
    Most of the forests have been lost in tropical areas.
  • Correct answer
    B
    Ozone in upper part of atmosphere is bad ozone and is harmful to animals.
  • C
    Greenhouse effect is a natural phenomenon which heats the earths atmosphere.
  • D
    Eutrophication is a natural phenomenon in freshwater bodies which causes natural ageing of lakes..

Solution

Ozone present in upper atmosphere forms a distinct layer that is known as ozone layer. Ozone layer is necessary for the survival of life on earth as it blocks harmful UV rays of sun from reaching earth's surface. Bad ozone is pollutant which is present in lower atmosphere in trophosphere.

Hence, the correct answer is option: 'B'.

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