Define Ecdysis

Explanation

### Step-by-Step Solution:

1. **Definition of Ecdysis**: Ecdysis is the biological process of shedding or molting of the outer cuticle or exoskeleton in many invertebrates, particularly arthropods.

2. **Context of Ecdysis**: This process is essential for growth in organisms that possess a rigid exoskeleton, as the exoskeleton does not grow with the organism.

3. **Occurrence in Invertebrates**: Ecdysis primarily occurs in invertebrates, especially those classified under Ecdysozoa, which includes arthropods such as insects, crustaceans, and arachnids.

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