The heart of cockroach is

Options

A. Myogenic
B. Neurogenic
C. Neuro-myogenic
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about the type of heart present in cockroaches.

2. **Understand the Options**: The options provided are:
- Myogenic
- Neurogenic
- Neuromyogenic
- None of the above

3. **Define Myogenic Heart**: A myogenic heart is one that can generate contractions without the need for nervous impulses. This means that the heart can beat independently of nerve signals. An example of a myogenic heart is the human heart.

4. **Define Neurogenic Heart**: A neurogenic heart, on the other hand, requires nerve impulses to contract. This means that the heart's contractions are dependent on signals from the nervous system.

5. **Identify the Heart Type in Cockroaches**: Cockroaches belong to the phylum Arthropoda, and they possess a neurogenic heart. This means that their heart requires constant nerve impulses to contract.

6. **Conclusion**: Based on the definitions and the characteristics of the heart in cockroaches, the correct answer is that the heart of cockroaches is **neurogenic**.

**Final Answer**: The heart of cockroaches is **neurogenic**.

---