The periodical shedding of exoskeleton in arthropods is called______.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Context**: The question asks about a specific biological process related to arthropods, which are a group of invertebrates that include insects, arachnids, and crustaceans.

2. **Identifying the Process**: The process in question involves the shedding of the exoskeleton, which is a characteristic feature of arthropods. This is necessary for growth, as the exoskeleton does not expand.

3. **Terminology**: The term used to describe this process is crucial. The shedding of the exoskeleton is known as "ecdysis." It is also commonly referred to as "molting."

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