Question

Arrange the following processes involved in the nutrition in animals in the correct order (in which they take place) : Assimilation, Egestion, Ingestion, Absorption, Digestion

Answer 1

The correct order is Ingestion, digestion, absorption, assimilation and egestion.

• Ingestion: It is the process where the food is taken inside through the mouth that is swallowing.
• Digestion: It is the process by which complex food is broken down to simple, absorbable form by digestive enzymes.
• Absorption: It is the process by which products of digestion are taken up or absorbed by blood. The small intestine is the main site of the absorption of digested food.
• Assimilation: It is the process by which absorbed food integrates into the cells of the body. Assimilated food is used by the body cells for obtaining energy from absorbed nutrients as well as for growth and repair of the body.
• Egestion: It is the process by which undigested solid food or faeces is removed from the body through excretion via the anus.