In arthropods ecdysis is

Options

A. Increase in size due to removal of exoskeleton
B. Change in feeding habit from larva to adult
C. Finding proper mate
D. Retaining the shape from larva to adult

Answer

### Step-by-Step Solution:

1. **Understanding Ecdysis**: Ecdysis is the biological process in which arthropods, such as insects and crustaceans, shed their old exoskeleton to allow for growth. This process is essential because the exoskeleton is rigid and does not grow with the organism.

2. **Role of Exoskeleton**: The exoskeleton of arthropods is primarily made of chitin, which provides structural support and protection. However, as the arthropod grows, it becomes necessary to replace the old exoskeleton with a new, larger one.

3. **Process of Ecdysis**: During ecdysis, the arthropod's old exoskeleton becomes weakened at specific points. The organism then takes in water or air, which causes the old exoskeleton to split. This allows the arthropod to emerge from the old shell.

4. **Result of Ecdysis**: After shedding the old exoskeleton, the arthropod increases in size as it expands its body before the new exoskeleton hardens. This process allows for growth and development in the organism.

5. **Conclusion**: Among the options provided in the question, the correct answer is that ecdysis results in an increase in size due to the removal of the exoskeleton.

### Final Answer:
In arthropods, ecdysis is the process of increasing in size due to the removal of the old exoskeleton.

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