Question

The food we take in our body travels through a long and complex path starting from mouth to anus. Which is the correct sequence of processes on food in the digestive system?

• A. Digestion $\to$ Absorption $\to$ Egestion $\to$ Ingestion
• B. Ingestion $\to$ Egestion $\to$ Digestion $\to$ Absorption
• C. Digestion $\to$ Ingestion $\to$ Absorption $\to$ Egestion
• D. Ingestion $\to$ Digestion $\to$ Absorption $\to$ Egestion

Answer 1

The correct option is D Ingestion $\to$ Digestion $\to$ Absorption $\to$ Egestion

• Ingestion- Ingestion means intake of food into the mouth and chewing of food.
• Digestion- Ingested food enters into the stomach where digestion of food takes place. Many digestive juices get mixed with food and digestion gets completed.

• Absorption- Digested food enters the intestine. The absorption of food takes place in the intestine. The intestine has many finger-like projections which are known as villi. Villi help in the absorption of food.
• Egestion- Excretion of waste occurs in this stage. Waste is thrown out through the anus.

Thus, the correct answer is option D.