If an "Axolotl larva" is placed in water containing sufficient Iodine then :-

Options

A. Larva will die soon
B. Its skin pigmentation will change
C. It will start metamorphosis
D. It remains as usual without any change

Answer

### Step-by-Step Solution:

1. **Understanding the Axolotl Larva**:
- The axolotl is a larval form of the tiger salamander. It is known for its ability to remain in its larval state for an extended period, a phenomenon called neoteny.

2. **Effect of Iodine on Metamorphosis**:
- Iodine is known to play a crucial role in the hormonal regulation of metamorphosis in amphibians. In the presence of sufficient iodine, the hormonal changes can trigger the metamorphosis process.

3. **Evaluating the Options**:
- **Option 1: Larvae will die soon**: This option is incorrect. Iodine does not have a toxic effect on axolotl larvae; instead, it promotes development.
- **Option 2: Skin Pigment will change**: While skin pigmentation can change during metamorphosis, this is not the primary effect of iodine.
- **Option 3: Start Metamorphosis**: This is the correct answer. The presence of iodine will stimulate the axolotl larva to begin the metamorphosis process.

4. **Conclusion**:
- The correct answer is that the axolotl larva will start metamorphosis when placed in water containing sufficient iodine.