In reptiles, tympanum represent __________

Explanation

**Step-by-Step Solution:**

1. **Identify the Class of Reptiles**: Reptiles belong to the class Reptilia, which is part of the phylum Chordata. This classification is important as it helps us understand the biological context of reptiles.

2. **Understand the Structure of Tympanum**: The tympanum is a structure found in reptiles. It is an important part of their anatomy.

3. **Function of the Tympanum**: The primary function of the tympanum in reptiles is related to hearing. It acts as an ear structure, allowing reptiles to detect sounds.

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