Which of the following features is not present in the Phylum Arthropoda ?

Options

A. Chitinous exoskeleton
B. Metameric segmentation
C. Parapodia
D. Jointed appendages

Answer

To determine which feature is not present in the Phylum Arthropoda, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Phylum Arthropoda**:
- Phylum Arthropoda is known for its diverse and successful organisms, including insects, arachnids, and crustaceans.

2. **Identify Key Characteristics**:
- The main characteristics of Arthropoda include:
- **Chitinous Exoskeleton**: Arthropods have a hard outer covering made of chitin.
- **Metameric Segmentation**: Their bodies are segmented, which allows for specialization of body parts.
- **Jointed Appendages**: They possess limbs that are jointed, which aids in movement.

3. **Consider Other Features**:
- While analyzing the question, we need to evaluate features that might be associated with other phyla. For instance, **parapodia** are fleshy protrusions found in some annelids (like polychaetes) and are not a characteristic of arthropods.

4. **Conclusion**:
- Since parapodia are not a feature of Phylum Arthropoda, the answer to the question is **parapodia**.

### Final Answer:
The feature that is not present in the Phylum Arthropoda is **parapodia**.

---