In cockroach, the position of heart is

Options

A. Central
B. Dorsal
C. Ventral
D. Lateral

Answer

### Step-by-Step Solution:

1. **Understanding the Circulatory System of Cockroaches**:
- Cockroaches have an open circulatory system. This means that their blood (hemolymph) is not confined to blood vessels but flows freely through cavities in the body.

2. **Heart Structure**:
- The heart of a cockroach is funnel-shaped and consists of 13 chambers. This unique structure allows for efficient pumping of hemolymph throughout the body.

3. **Position of the Heart**:
- The heart is located on the dorsal side of the cockroach's body. The dorsal side refers to the upper surface, which is the side that faces the sky when the cockroach is resting on a flat surface.

4. **Comparison with Other Organisms**:
- In contrast to cockroaches, other organisms like humans have a centrally located heart, while some fish have a lateral heart position.

5. **Conclusion**:
- Therefore, the correct answer regarding the position of the heart in cockroaches is that it is situated on the dorsal side of the body.