Q. Assertion : Consciousness is a defining property of living organisms.
Reason : Human being is the only organism that has self consciousness.

 4275  213 The Living World Report Error

Solution:

All living organisms have an inherent ability to sense their surroundings or environment and respond to their environmental stimuli. Plants and animals both respond to the external stimuli. Human beings are the only organisms who are aware of themselves, i.e., have self-consciousness.