The broadest and the longest part of leg of cockroach is respectively :

Options

A. Femur and tibia
B. Femur and tarsus
C. Coxa and tarsus
D. Coxa and tibia

Answer

To answer the question regarding the broadest and longest part of the leg of a cockroach, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Cockroach Legs**: The legs of a cockroach consist of five segments: coxa, trochanter, femur, tibia, and tarsus.

2. **Identify Each Segment**:
- **Coxa**: This is the part that connects the leg to the body and is the broadest segment of the leg.
- **Trochanter**: This is a small, rod-like structure that connects the coxa to the femur.
- **Femur**: This segment is long and spiny but is not the longest.
- **Tibia**: This is the longest segment of the leg.
- **Tarsus**: This segment is further divided into smaller parts called tarsomeres and is not the longest.

3. **Determine the Broadest Part**: From the segments identified, the coxa is the broadest part of the cockroach's leg.

4. **Determine the Longest Part**: The tibia is identified as the longest segment of the cockroach's leg.

5. **Conclusion**: Therefore, the broadest part of the leg of a cockroach is the coxa, and the longest part is the tibia.

### Final Answer:
The broadest and the longest part of the leg of a cockroach is respectively **Coxa and Tibia**.

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