Question

Read the following statements and select the correct option.

Statement 1: Ozone layer present in the stratosphere protects the living organisms from harmful UV rays coming from the sun by absorbing nearly all of them.

Statement 2: Ozone formed in the troposphere by photochemical reactions as a result of human activities which is harmful to all living organisms.

• A. Both statements 1 and 2 are correct.
• B. Statement 1 is correct but statement 2 is incorrect.
• C. Statement 1 is incorrect but statement 2 is correct.
• D. Both statements 1 and 2 are incorrect.

Answer 1

The correct option is A Both statements 1 and 2 are correct.

'Good ozone' is found in the upper part of the atmosphere called the stratosphere and it act as a shield by absorbing ultraviolet radiations from the sun. UV rays are, highly injurious to living organisms. 'Bad ozone' is formed in the lower part of atmosphere called troposphere and it harms plants and animals.