Axolotl undergoes metamorphosis as soon as

Options

A. sex organs develop
B. food becomes plenty
C. it is exposed to air
D. both B and C

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks when the axolotl undergoes metamorphosis. We need to identify the correct condition from the given options.

2. **Defining Metamorphosis**: Metamorphosis is a biological process where an animal undergoes a significant physical change after birth or hatching. This change often involves a transformation in body structure.

3. **Identifying the Axolotl**: The axolotl is an amphibian, specifically known as the Mexican walking fish. It belongs to the kingdom Animalia and the phylum Chordata.

4. **Analyzing the Options**:
- **Option A (Sex organs develop)**: This is incorrect. The development of sex organs does not trigger metamorphosis in axolotls.
- **Option B (Food becomes plenty)**: This is also incorrect. The availability of food does not directly cause metamorphosis.
- **Option C (It is exposed to air)**: This is correct. Axolotls undergo metamorphosis when they are exposed to air.
- **Option D (B and C both)**: This is incorrect since only option C is correct.

5. **Conclusion**: The correct answer is **Option C**, which states that the axolotl undergoes metamorphosis as soon as it is exposed to air.

### Final Answer:
**The axolotl undergoes metamorphosis as soon as it is exposed to air (Option C).**

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