axolostl larva possesses

Options

A. external gills
B. Laterally compressed tail
C. dorsal fin
D. All the above.

Answer

### Step-by-Step Solution:

1. **Identify the Subject**: The question asks about the characteristics of the axolotl larva, which is a type of amphibian.

2. **Understand the Axolotl**: The axolotl is a larval form of the tiger salamander. It is unique because it can reach adulthood without undergoing metamorphosis, which is a key characteristic of this species.

3. **List the Features of Axolotl Larva**:
- **External Gills**: Axolotl larvae possess external gills that are typically three in number. These gills are used for respiration in the water.
- **Lateral Compressed Tail**: The axolotl has a tail that is laterally compressed, which aids in swimming.
- **Dorsal Fin**: A dorsal fin runs along the back of the axolotl larva, which is also a common feature in amphibian larvae.

4. **Evaluate the Options**: The question provides options regarding the features possessed by the axolotl larva. Based on the characteristics listed:
- External gills are present.
- A laterally compressed tail is present.
- A dorsal fin is present.

5. **Conclusion**: Since all the mentioned features (external gills, lateral compressed tail, and dorsal fin) are present in the axolotl larva, the correct answer is "all of the above."

### Final Answer:
The axolotl larva possesses external gills, a laterally compressed tail, and a dorsal fin. Therefore, the correct option is **all of the above**.

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