The body cavity of cockroach is called :

Options

A. pseudocoel
B. coelom
C. hydrocoel
D. haemocoel

Answer

To answer the question "The body cavity of cockroach is called:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify the correct term for the body cavity in cockroaches from the given options.

2. **Review the Options**:
- Option A: Pseudocele
- Option B: Coelom
- Option C: Hydrocele
- Option D: Hemocele

3. **Identify the Type of Organism**: Cockroaches belong to the phylum Arthropoda, which is crucial for understanding their body structure.

4. **Define Each Option**:
- **Pseudocele**: This is a body cavity found in some invertebrates, but it does not apply to arthropods like cockroaches.
- **Coelom**: This is a true body cavity found in higher metazoans, located between the body wall and the digestive tract. Cockroaches do not have a true coelom.
- **Hydrocele**: This refers to the accumulation of serous fluid in a body sac, which is not relevant to cockroaches.
- **Hemocele**: This is the body cavity in arthropods, filled with hemolymph (the equivalent of blood in these organisms).

5. **Determine the Correct Answer**: Since cockroaches have a body cavity known as hemocele, which is filled with hemolymph, the correct answer is option D: Hemocele.

6. **Conclusion**: The body cavity of the cockroach is called hemocele.

### Final Answer:
The body cavity of cockroach is called **hemocele** (Option D).