Which one does not occur in Cockroach leg ?

Options

A. Tibia
B. Femur
C. Fibula
D. Coxa.

Answer

To determine which structure does not occur in the leg of a cockroach, we can analyze the components of the cockroach leg step by step.

### Step-by-Step Solution:

1. **Identify the Components of a Cockroach Leg**:
- A cockroach has three pairs of legs, and each leg is divided into several segments.

2. **List the Segments of the Cockroach Leg**:
- The main segments of a cockroach leg include:
- **Coxa**: This is the uppermost part of the leg that connects to the body.
- **Trochanter**: This is a small segment that connects the coxa to the femur.
- **Femur**: This is the second segment of the leg, located below the trochanter.
- **Tibia**: This is the segment that follows the femur.
- **Tarsus**: This is the segment that comes after the tibia and is made up of several smaller parts.

3. **Analyze the Options Given**:
- The options provided are:
- **A. Tibia**: Present in the cockroach leg.
- **B. Femur**: Present in the cockroach leg.
- **C. Fibula**: Not present in the cockroach leg.
- **D. Coxa**: Present in the cockroach leg.

4. **Determine the Correct Answer**:
- From the analysis, we see that the tibia, femur, and coxa are all present in the cockroach leg. The fibula, however, is not a part of the cockroach leg structure. Therefore, the correct answer is **C. Fibula**.

### Final Answer:
The structure that does not occur in a cockroach leg is **C. Fibula**.

---