Break down of food by the teeth in the oral cavity is called

Options

A. chemical digestion
B. mechanical digestion
C. microbial digestion
D. hydrolsis

Answer

To answer the question "Breakdown of food by the teeth in the oral cavity is called", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the process that occurs in the oral cavity when food is broken down by teeth.

2. **Identifying the Role of Teeth**: Teeth are primarily used for chewing food. This process is known as mastication, where food is physically broken down into smaller pieces.

3. **Types of Digestion**:
- **Mechanical Digestion**: This refers to the physical breakdown of food into smaller pieces without changing its chemical structure. This occurs in the mouth when teeth chew food.
- **Chemical Digestion**: This involves breaking down food into simpler nutrients through chemical reactions, typically involving enzymes.
- **Microbial Digestion**: This refers to the digestion that occurs with the help of microbes, usually in the intestines.
- **Hydrolysis**: This is a chemical process that involves the breakdown of compounds due to reaction with water, but it is not specifically related to the action of teeth.

4. **Conclusion**: Since the question specifically refers to the breakdown of food by teeth, which is a physical process, the correct answer is **mechanical digestion**.

### Final Answer:
The breakdown of food by the teeth in the oral cavity is called **B. Mechanical Digestion**.

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