Which of the following features is not present in the in the phylum arthropoda

Options

A. Metmeric -Segmentation
B. Parapodia
C. Jointed Appendages
D. Chitnous exoskeleton

Answer

To determine which feature is not present in the phylum Arthropoda, we will analyze the given options one by one.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are:
- A) Metameric Segmentation
- B) Parapodia
- C) Jointed Appendages
- D) Chitinous Exoskeleton

2. **Evaluate Option A: Metameric Segmentation**:
- Metameric segmentation refers to the division of the body into repeated segments.
- In arthropods, the body is segmented, which means this feature is present in the phylum Arthropoda.
- **Conclusion**: This is not the correct answer.

3. **Evaluate Option B: Parapodia**:
- Parapodia are lateral extensions found in some annelids (segmented worms) that help in locomotion and respiration.
- Arthropods do not possess parapodia; instead, they have jointed appendages.
- **Conclusion**: This feature is not present in Arthropoda, making it a potential correct answer.

4. **Evaluate Option C: Jointed Appendages**:
- One of the defining characteristics of arthropods is the presence of jointed appendages, which are adapted for various functions such as locomotion, feeding, and sensory perception.
- **Conclusion**: This feature is present in Arthropoda.

5. **Evaluate Option D: Chitinous Exoskeleton**:
- Arthropods are characterized by having a chitinous exoskeleton that provides protection and structural support.
- **Conclusion**: This feature is also present in Arthropoda.

6. **Final Conclusion**:
- After evaluating all options, the feature that is not present in the phylum Arthropoda is **Parapodia**.

### Answer:
The feature that is not present in the phylum Arthropoda is **Parapodia**.

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