Glisson's capsules is the characteristic feature of

Options

A. mammals
B. birds
C. reptiles
D. arthropods.

Explanation

### Step-by-Step Solution:

1. **Understanding Glisson's Capsule**: Glisson's capsule is a specific anatomical structure associated with the liver. It is a layer of connective tissue that surrounds the liver and is important for its function.

2. **Identifying the Organism Group**: The question asks which group of organisms has Glisson's capsule as a characteristic feature. The options provided are mammals, birds, reptiles, and arthropods.

3. **Analyzing the Options**:
- **Mammals**: In mammals, Glisson's capsule is present and serves as a protective covering for the liver, encompassing the hepatic artery, portal vein, and bile ducts.
- **Birds**: Birds do not possess Glisson's capsule; their liver structure is different.
- **Reptiles**: Similarly, reptiles do not have Glisson's capsule.
- **Arthropods**: Arthropods have a completely different body structure and do not have a liver covered by Glisson's capsule.

4. **Conclusion**: Since Glisson's capsule is specifically associated with the liver in mammals, the correct answer to the question is **mammals**.

### Final Answer:
The characteristic feature of Glisson's capsule is found in **mammals**.

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