presence of protoplasm, self built organisms, self repair, reproduction and various life process like metabolism, nutrition, respiration, exchange of material, transportation, excretion and irritability.
One good way to remember this is with the acronym MRS GREN;
Movement - The organism can move in some way (plants move as they grow) Reproduction - Creating new copies of this organism Sensitivity - A response to a change in the environment around the organism
Growth - The ability to create new structures / cells Respiration - The ability to break down food to get energy Excretion - The organism creates waste which is disposed of Nutrition - The organism has the ability to eat food