Pre-lingual elevations occur in Frog

Options

A. Three terminal over upper jaw
B. Three terminal over lower jaw
C. Three lateral over upper jaw
D. Three lateral over lower jaw

Answer

**Solution:**

To answer the question regarding where pre-lingual elevations occur in frogs, we need to analyze the structure of the frog's mouth parts.

1. **Understanding Pre-lingual Elevations**:
- Pre-lingual elevations are specific structures found in frogs. As indicated by the name, these are elevations located at a certain part of the frog's anatomy.

2. **Location of Pre-lingual Elevations**:
- These elevations are specifically found at the tip of the lower jaw of the frog. This is an important detail as it helps us identify the correct answer among the options provided.

3. **Contrasting Structures**:
- In addition to pre-lingual elevations, there are other structures in the frog's mouth, such as the sub-rostral fossa. These are depressions located on the upper jaw, which fit into the elevations on the lower jaw.

4. **Function of These Structures**:
- The primary function of the pre-lingual elevations and the sub-rostral fossa is to aid in the closure of the mouth. When the elevations on the lower jaw fit into the depressions on the upper jaw, they help seal the mouth tightly, which is crucial during the exchange of gases.

5. **Evaluating the Options**:
- Now, let's evaluate the options given in the question:
- **Three terminal over upper jaw**: Incorrect.
- **Three terminal over lower jaw**: Correct, as pre-lingual elevations are found here.
- **Three lateral over upper jaw**: Incorrect.
- **Three lateral over lower jaw**: Incorrect.

6. **Conclusion**:
- Based on the analysis, the correct answer is that pre-lingual elevations occur in the "three terminal over lower jaw."

**Final Answer**: Pre-lingual elevations occur in the "three terminal over lower jaw."

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