Why is the fibro-cartilage toughest and hardest ?

Explanation

### Step-by-Step Text Solution:

1. **Understanding Fibrocartilage**: Fibrocartilage is a type of cartilage that is known for its toughness and hardness compared to other types of cartilage.

2. **Composition of Fibrocartilage**: The matrix of fibrocartilage is primarily made up of white fibers, which are predominantly composed of collagen.

3. **Role of Collagen**: Collagen fibers provide strength and rigidity to the fibrocartilage. This structural protein is essential for maintaining the integrity and durability of the cartilage.

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