Truncus arteriousus is present in____side of heart of frog.

Options

A. Dorsal
B. Lateral
C. Ventral
D. Dorso-lateral

Explanation

To answer the question about the location of the truncus arteriosus in the heart of a frog, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Frog Heart Anatomy**:
- The frog has a three-chambered heart, which consists of two atria and one ventricle. This is different from mammals, which have a four-chambered heart.

2. **Identifying the Truncus Arteriosus**:
- The truncus arteriosus is a tubular structure that emerges from the heart. It is an important part of the circulatory system in amphibians.

3. **Locating the Truncus Arteriosus**:
- In frogs, the truncus arteriosus extends from the right side of the ventricle. This means that it is located on the ventral side of the heart.

4. **Function of the Truncus Arteriosus**:
- Its primary function is to receive deoxygenated (impure) blood from the body and direct it towards the lungs for oxygenation.

5. **Conclusion**:
- Therefore, the truncus arteriosus is present on the **right side** of the heart of a frog.

### Final Answer:
The truncus arteriosus is present on the **right side** of the heart of the frog.

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