Diplopods (e.g., Millipede) differ from a chilopods (e.g., Centipede) in

Options

A. Occurrence of two pairs of legs on each segment
B. Presence of pedipalpi
C. Presence of chelicerae
D. Absence of sting.

Answer

To answer the question about how Diplopods (e.g., Millipedes) differ from Chilopods (e.g., Centipedes), we can break down the differences step by step:

### Step-by-Step Solution:

1. **Understanding Diplopods and Chilopods**:
- Diplopods, such as millipedes, have a body structure that is divided into three main parts: head, thorax, and abdomen.
- Chilopods, like centipedes, also have a segmented body but differ in the number of legs per segment.

2. **Leg Structure**:
- In Diplopods (millipedes), each body segment typically has two pairs of legs. This means that for every segment, there are four legs.
- In Chilopods (centipedes), each body segment has only one pair of legs, resulting in two legs per segment.

3. **Analyzing the Options**:
- **Occurrence of two pairs of legs on each segment**: This is true for millipedes (Diplopods) and is a key distinguishing feature.
- **Presence of pedipalpy**: Pedipalps are not a characteristic feature of millipedes; they are found in arachnids like spiders and scorpions.
- **Presence of chelicerae**: Chelicerae are also not present in millipedes; they are found in certain arthropods, including some Chilopods and arachnids.
- **Absence of sting**: While millipedes do not have a sting, this is not a primary distinguishing feature between the two groups.

4. **Conclusion**:
- The major difference between Diplopods and Chilopods is the occurrence of two pairs of legs on each segment in Diplopods (millipedes), which is not the case for Chilopods (centipedes).

### Final Answer:
The correct answer is the **occurrence of two pairs of legs on each segment** in Diplopods (e.g., Millipedes) compared to the single pair of legs in each segment of Chilopods (e.g., Centipedes).

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