Centipede and earthworms have a segmented body, but they are in two different phyla. Identify the phyla they belong to.

Options

A. Arthropoda and Annelida
B. Arthropoda and Aschelminthes
C. Annelida and Aschelminthes
D. None of these

Explanation

To solve the question regarding the phyla to which centipedes and earthworms belong, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organisms**:
- We need to identify the two organisms mentioned: centipedes and earthworms.

2. **Determine the Phylum of Centipedes**:
- Centipedes are classified under the phylum **Arthropoda**. This phylum is characterized by organisms that have an exoskeleton, segmented bodies, and jointed appendages.

3. **Determine the Phylum of Earthworms**:
- Earthworms belong to the phylum **Annelida**. This phylum is known for its segmented bodies that exhibit metameric segmentation, where the body is divided into distinct segments.

4. **Highlight the Differences**:
- While both centipedes and earthworms have segmented bodies, the segmentation in centipedes is simple, whereas earthworms exhibit metameric segmentation.
- Centipedes have an exoskeleton made of chitin, while earthworms have a soft body structure made of collagen.
- Centipedes possess an open circulatory system, while earthworms have a closed circulatory system.

5. **Conclusion**:
- Therefore, the phyla that centipedes and earthworms belong to are **Arthropoda** and **Annelida**, respectively.

### Final Answer:
- Centipedes belong to the phylum **Arthropoda**.
- Earthworms belong to the phylum **Annelida**.

---