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Solution


Q.

Assertion: Plastics are non-biodegradable.
Reason: Enzymes cannot degrade plastics.
1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.  
3 Assertion is true but Reason is false.  
4 Assertion is false but Reason is true.  

Ans.

(1)

Substances which cannot be decomposed by the action of microorganisms are known as non-biodegradable substances. Microorganisms release enzymes which decompose the materials but these enzymes are specific in their action that is why enzymes cannot decompose all the materials. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.