Alimentary canal of herbivorous animal differs from that of a carnivore in having :

Options

A. Short alimentary canal
B. Long alimentary canal
C. Wide alimentary canal
D. Thin alimentary canal

Explanation

To answer the question regarding how the alimentary canal of herbivorous animals differs from that of carnivorous animals, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Animals**:
- Herbivores are animals that primarily eat plants.
- Carnivores are animals that primarily eat other animals.

2. **Analyze the Diet**:
- Herbivores consume plant material which is often high in cellulose.
- Carnivores consume meat which is easier to digest and does not contain cellulose.

3. **Consider the Structure of the Alimentary Canal**:
- The structure of the alimentary canal is adapted to the diet of the animal.
- Herbivores require a longer digestive tract to break down cellulose and extract nutrients from plant material.

4. **Length of the Alimentary Canal**:
- Herbivores have a **long alimentary canal** to allow for the extended digestion of fibrous plant material.
- Carnivores have a **short alimentary canal** since their diet consists of easily digestible meat.

5. **Conclusion**:
- The primary difference in the alimentary canal of herbivorous animals compared to carnivorous animals is that herbivores have a **long alimentary canal**.

### Final Answer:
The alimentary canal of herbivorous animals differs from that of carnivorous animals in having a **long alimentary canal**.

---