The process of excreting unusable or undigested material through the anus is known as ________ .
egestion
Ingestion, digestion, absorption and egestion are the processes involved in digestion of a food material.
∙ Ingestion is the consumption of food by an organism.
∙ Digestion is the process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body.
∙ Absorption is the process by which the digested food molecules are absorbed in the small intestine.
∙ The left over or undigested food is removed from the body through anus by the process of egestion.