Assertion :Living systems are closed systems. Reason: Energy of living organisms cannot be lost gained from environment.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
There are three types of systems namely open, and close systems. Close systems do not have the flow of energy between the object and surrounding, and in an open system, there is the free flow of energy and mass. Living things and their surrounding have an open flow of energy and mass so they are an open system. For eg., in process of photosynthesis, the plants absorb energy from sun rays to carry out their metabolic activities. Hence both assertion and reason are incorrect.
So the correct option is D " both reason and assertion".

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