The targa, sterna and pleura of cockroach body are joined by

Options

A. muscular tissue
B. arthrodial membrane
C. cartilage
D. cementing glue

Answer

### Step-by-Step Solution:

1. **Understanding the Terms**:
- **Terga**: These are the dorsal sclerites of the cockroach. They form the upper part of the exoskeleton.
- **Sterna**: These are the ventral sclerites. They form the lower part of the exoskeleton.
- **Pleura**: These are the lateral sclerites that are flexible and connect the terga and sterna.

2. **Identifying the Connection**:
- The terga, sterna, and pleura are not rigidly attached to each other. Instead, they are joined by a specialized membrane.

3. **Naming the Membrane**:
- The membrane that connects the terga, sterna, and pleura is known as the **intersegmental membrane**.

4. **Alternative Name**:
- This intersegmental membrane is also referred to as the **Arthrodial membrane**.

5. **Characteristics of the Membrane**:
- The intersegmental or Arthrodial membrane is described as soft, colorless, and flexible, allowing for movement between the different body segments of the cockroach.

### Final Answer:
The terga, sterna, and pleura of the cockroach body are joined by the intersegmental membrane, also known as the Arthrodial membrane.

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