Question

(a) What criteria can be used to decide whether something is alive?
(b) What is meant by life processes? Name the basic life processes common to all living organisms which are essential for maintaining life.

Answer 1

(a) Movement is the criteria used to decide whether something is alive.

(b) The basic functions performed by the living organisms to maintain their life on the Earth are known as life processes. The basic life processes common to all living organisms and essential for maintaining life are nutrition, growth, movement, respiration, transportation, reproduction, excretion and control and coordination.