True coelon of Cockroach occurs

Options

A. Around head sinuses
B. Around ganods
C. Around heart
D. In thorax

Answer

To answer the question "True coelom of Cockroach occurs," we will analyze the options provided and understand the concept of coelom in relation to the cockroach.

### Step-by-Step Solution:

1. **Understanding Coelom**:
- Coelom is defined as the principal body cavity in most animals, located between the intestinal canal and the body wall. It is important for the organization of internal organs.

2. **Coelom in Cockroach**:
- Cockroaches are classified as coelomate animals, which means they possess a coelom. However, it is important to note that in adult cockroaches, the coelom is significantly reduced.

3. **Reduction of Coelom**:
- As cockroaches mature into adulthood, their original coelom gets reduced. This reduction leads to a different representation of coelomic spaces.

4. **Representation of Coelom**:
- In adult cockroaches, the original coelom is represented by the cavities of the reproductive organs (gonads). This indicates that the true coelom is associated with the reproductive system.

5. **Identifying the Correct Option**:
- Given the options:
- A) Around head sinuses
- B) Around gonads
- C) Around heart
- D) Endothorax
- Since the true coelom is represented by the cavities of the reproductive organs, the correct answer is **B) Around gonads**.

### Final Answer:
The true coelom of cockroach occurs around the gonads.

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