Longest podomere of cockroach's leg is

Options

A. Coxa
B. femur
C. Tibia
D. Tarsus

Answer

To determine the longest podomere of a cockroach's leg, we need to analyze the structure of the leg and identify the different segments. Here’s a step-by-step solution:

### Step 1: Understand the Structure of Cockroach Legs
The legs of a cockroach are divided into several segments known as podomeres. The main segments are:
- Coxa
- Femur
- Tibia
- Tarsus

### Step 2: Identify Each Segment
- **Coxa**: This is the first segment that connects the leg to the body.
- **Femur**: This is the second segment, which is thicker and provides strength.
- **Tibia**: This is the third segment and is typically longer and stronger than the femur.
- **Tarsus**: This is the last segment, which consists of multiple smaller segments (tarsomeres) and includes the tarsal claws.

### Step 3: Compare the Lengths of Each Segment
Among these segments:
- The **Coxa** is relatively short.
- The **Femur** is longer than the coxa but not as long as the tibia.
- The **Tibia** is the longest segment of the leg.
- The **Tarsus** is made up of smaller segments and is not as long as the tibia.

### Step 4: Conclusion
After comparing the lengths of the segments, it is clear that the **Tibia** is the longest podomere of the cockroach's leg.

### Final Answer
The longest podomere of the cockroach's leg is the **Tibia**.

---