Question

The process of excreting unusable or undigested material through the anus is known as ________ .

• A. egestion
• B. ingestion
• C. assimilation
• D. digestion

Answer 1

The correct option is A

egestion

Ingestion, digestion, absorption and egestion are the processes involved in digestion of a food material.

$\bullet$ Ingestion is the consumption of food by an organism.
$\bullet$ 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.
$\bullet$ Absorption is the process by which the digested food molecules are absorbed in the small intestine.
$\bullet$ The left over or undigested food is removed from the body through anus by the process of egestion.