In frog, the biggest bone of verterbral column is

Options

A. pygostyle
B. uropyge
C. urostyle
D. none of these

Answer

To answer the question "In frog, the biggest bone of the vertebral column is," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Frog's Vertebral Column**:
- Frogs have a vertebral column made up of several vertebrae. Specifically, they have ten vertebrae in total.

2. **Identify the Types of Vertebrae**:
- The first vertebra is known as the **atlas**, which is the only cervical vertebra in frogs. It articulates with the base of the skull.

3. **Determine the Largest Bone**:
- Among the vertebrae, the largest bone in the vertebral column of frogs is known as the **urostyle**. The urostyle is formed by the fusion of several vertebrae at the base of the vertebral column.

4. **Evaluate the Options**:
- The options given are:
- A) Fibro style
- B) Euro 5G
- C) Euro style
- D) None of these
- The correct answer is **C) Euro style**.

5. **Explain Other Options**:
- **Pygostyle**: This is a bone found in birds, formed by the fusion of caudal vertebrae, and is not relevant to frogs.
- **Europhysae**: This term refers to a group of whip scorpions and is unrelated to frog anatomy.

6. **Conclusion**:
- Therefore, the biggest bone of the vertebral column in frogs is the **urostyle**, making option C the correct choice.