In human being digestion of starch starts from -

Options

A. Mouth
B. Stomach
C. Duodenum
D. Oesophagus

Answer

**Step-by-Step Solution:**

1. **Understanding Starch**: Starch is a polysaccharide, which means it is a complex carbohydrate made up of many glucose units.

2. **Location of Digestion**: The digestion of starch begins in the mouth. This is the first step in the digestive process for starch.

3. **Role of Salivary Amylase**: In the mouth, an enzyme called salivary amylase is secreted in saliva. This enzyme is crucial for the digestion of starch.

4. **Process of Digestion**: Salivary amylase breaks down starch into simpler sugars, specifically converting it into disaccharides. This process accounts for approximately 30% of starch digestion.

5. **Conclusion**: Therefore, the correct answer to the question "In human beings, digestion of starch starts from" is the mouth.

**Final Answer**: The digestion of starch starts from the mouth.

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