The process of excreting unused or undigested material through the anus is known as __________.
egestion
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. Lastly, the left over or undigested food is removed from the body through anus by the process of egestion.