Direction: Choose the appropriate answer from the options given below :

______ is called the “physical basis of life” as it performs the all the activities of the living being.

Protoplasm is called the physical basis of life because it performs all vital activities - metabolism, growth, reproduction, response to stimuli. It includes cytoplasm and nucleoplasm. Cytoplasm is just the portion outside the nucleus. Kinoplasm and ectoplasm are specialized regions of cytoplasm involved in movement and structural functions respectively, not the entire living substance.