Question

Explain various steps included in the process of nutrition.

Answer 1

Nutrition:

1. The process of nutrition occurs in five distinct steps. These are as follows.
   1. Ingestion: The process of taking in food through the buccal cavity is known as ingestion
   2. Digestion: It is the process of breaking down food into simpler substances.
   3. Absorption: The process of absorption takes place in the small intestine. Here, the digested food is absorbed in the blood through the villi, which are finger-like projections.
   4. Assimilation: The food absorbed by blood is transported to various parts of the body for the utilization by body cells. This is known as assimilation.
   5. Egestion: The process of removing the undigested food material from the body through the anus is known as egestion.