Amongst chordates, the paired appendages are absent in

Options

A. Hemichordates
B. Urochordates
C. Cephalochordates
D. All the above

Answer

To solve the question "Amongst chordates, the paired appendages are absent in," we need to analyze the options provided and understand the characteristics of the groups mentioned.

### Step-by-Step Solution:

1. **Understanding Chordates**: Chordates are a diverse group of animals that include vertebrates (animals with a backbone) and some invertebrates. The key feature of chordates is the presence of a notochord at some stage of their life cycle.

2. **Identifying Paired Appendages**: Paired appendages refer to limbs or fins that come in pairs, such as arms and legs in mammals or fins in fish. These appendages are primarily found in vertebrates.

3. **Analyzing the Options**:
- **Hemichordates**: These are considered to be invertebrates and do not possess a notochord. They lack paired appendages.
- **Urochordates**: Also known as tunicates, these are marine animals that are classified as invertebrates. They do not have paired appendages.
- **Cephalochordates**: These are small, fish-like animals that retain the notochord throughout their life. They also do not possess paired appendages.

4. **Conclusion**: Since hemichordates, urochordates, and cephalochordates are all non-vertebrate chordates, they lack paired appendages. Therefore, the correct answer to the question is that paired appendages are absent in all of the mentioned groups.

### Final Answer:
Paired appendages are absent in hemichordates, urochordates, and cephalochordates.

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