Caudal vertabrae of Frog fuse to form

Options

A. coccyx
B. urostyle
C. pygostyle
D. prehensile tail

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the structure formed by the fusion of caudal vertebrae in frogs.

2. **Identifying the Options**: The options provided are:
- A) Caucasus
- B) Eurostyle
- C) Pygostyle
- D) Prehensile tail

3. **Analyzing Each Option**:
- **Caucasus**: This term refers to the tailbone in some mammals, but it is not relevant to frogs as they do not possess this structure.
- **Eurostyle**: This is the correct term for the structure formed by the fusion of caudal vertebrae in frogs. It is a rod-like structure.
- **Pygostyle**: This term refers to a structure found in birds where a few caudal vertebrae fuse to support tail feathers. It is not applicable to frogs.
- **Prehensile tail**: This refers to a tail that can grasp or hold objects, typically seen in some arboreal animals. Frogs do not have prehensile tails.

4. **Conclusion**: Based on the analysis, the caudal vertebrae of frogs fuse to form the **Eurostyle**.

5. **Final Answer**: The correct answer is **B) Eurostyle**.

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