Mammalian bone differs from cartilage in the presence of

Options

A. lymph vessels
B. collagen
C. blood vessels
D. Haversion canals

Explanation

**Step-by-Step Solution:**

1. **Understanding Cartilage**: Cartilage is a type of connective tissue that is flexible and provides support to various parts of the body. It is found in areas such as the joints, nose, ears, and rib cage. Cartilage is not as strong as bone and lacks blood vessels.

2. **Understanding Bone**: Bone is a rigid and dense connective tissue that forms the skeleton of mammals. It is much stronger than cartilage and provides structural support, protection for organs, and facilitates movement.

3. **Key Differences**: The primary difference between bone and cartilage lies in their structure and composition. While cartilage is composed of a gel-like matrix and lacks blood vessels, bone is highly vascularized and contains a mineralized matrix.

4. **Presence of Specific Structures**: One of the key features that differentiate bone from cartilage is the presence of Haversian canals. These are small channels within the bone that contain blood vessels and nerves, allowing for nutrient and waste exchange.

5. **Conclusion**: Therefore, mammalian bone differs from cartilage primarily in the presence of Haversian canals, which are not found in cartilage.

**Final Answer**: Mammalian bone differs from cartilage in the presence of Haversian canals.

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