Question

Assertion. : Living organisms are regarded as closed systems.

Reason : Energy of living organisms cannot be lost or gained from the environment.

(a) Both A and R are true and R is the correct explanation of A  

(b) Both A and R are true but R is not correct explanation of A  

(c) A is true but R is false  

(d) A and R are false

Answer 1

Correct option (d) 

Explanation :

Living organisms are regarded as open system as they can loose or gain the mass or energy from the surrounding environment. All living organisms restore their lost energy either from the sunlight or indirectly from the food material.