Question

Arrange the correct sequence of the steps involved in the
process of Human Digestive System?
A. Digestion, Ingestion, Assimilation, Egestion and Absorption
B. Ingestion, Digestion, Absorption, Assimilation and Egestion
C. Egestion, Absorption, Digestion, Assimilation and Ingestion
D. Assimilation, Absorption, Ingestion, Digestion and Egestion​

Answer 1

The correct option is

B. Ingestion, Digestion, Absorption, Assimilation, Egestion.

Ingestion is a process where food is taken through the mouth crush by teeth in saliva.

Digestion is a process where large food molecules break into small molecules.

Absorption and Assimilation is a process where the nutrients are absorbed by tissue or organs.

Egestion is the process where unwanted or undigested food is discharged.

Answer 2

Answer:

(B) Ingestion, Digestion, Absorption, Assimilation and Egestion.

Explanation:

• Ingestion: It is the simple process of taking in food through the mouth. In vertebrates, the teeth, saliva, and tongue play important roles in making the food into a bolus.
• Digestion: It is the complex process of turning the food we eat into nutrients, which the body uses for energy, growth and cell repair which we need to survive.
• Absorption: It is the process by which the food we eat is absorbed by the blood to be supplied to the rest of the body.
• Assimilation: It is the movement of digested food molecules into the cells of the body where they are needed.
• Egestion: It is the act of excreting not usable or undigested waste material from a cell, as in the case of single-celled creatures or organisms, or from the digestive tract of multicellular living animals.

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