The type of muscle present in the alimentary canal is

Options

A. smooth muscle fibre
B. striped muscle fibre
C. cardiac muscle fibre
D. both (1) and (2)

Answer

### Step-by-Step Solution:

1. **Identify the Question**: The question asks about the type of muscle present in the alimentary canal.

2. **Understand the Options**: The options provided are:
- A) Smooth muscle fiber
- B) Striated muscle fiber
- C) Cardiac muscle fiber
- D) Both A and B

3. **Analyze the Alimentary Canal**: The alimentary canal, also known as the gastrointestinal tract, is responsible for the digestion and movement of food.

4. **Determine the Muscle Types**:
- **Smooth Muscle Fiber**: These muscles are non-striated and involuntary. They are found in the walls of hollow organs, including the alimentary canal.
- **Striated Muscle Fiber**: These muscles are voluntary and have striations. They are primarily found in skeletal muscles, not in the alimentary canal.
- **Cardiac Muscle Fiber**: These are also striated but are found only in the heart.

5. **Conclude the Correct Answer**: Since the alimentary canal contains smooth muscle fibers that facilitate peristalsis (the rhythmic contraction and relaxation that moves food through the digestive tract), the correct answer is **A) Smooth muscle fiber**.

### Final Answer:
The type of muscle present in the alimentary canal is **smooth muscle fiber**.

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