Question

The process of digestion of food in humans begins in:
(a) stomach
(b) food pipe
(c) mouth
(d) small intestine

Answer 1

The correct option is (C):

Explanation for the correct option:

1. The process of digestion starts from the mouth after ingesting the food. ​
2. The salivary amylase present in the saliva is responsible for digesting the carbohydrates.
   
3. It partially digests carbohydrate in food.

Explanation for the incorrect options:

Option (A):

1. The stomach is the region where digestion of protein occurs.
   
2. Pepsin acts on the food inside the stomach to digest the food.
   
3. But the food that comes to the stomach is partially digested from the mouth. ​

Option (B):

1. Food pipe or esophagus does not have digestive functions. ​

Option (D):

1. The small intestine is the region where complete digestion of food occurs due to enzymes from the pancreas and the intestinal cells.
   
2. Food reaches the intestine from the mouth and stomach after digestion in this region.

Final Answer: The process of digestion of food in humans begins in the mouth.