The exoskeleton of arthropods is made up of _____

Answer

**Step-by-Step Solution:**

1. **Understanding Exoskeleton**: The exoskeleton is a protective covering found in certain animal groups, including arthropods. It serves as a shield for the organism and helps prevent water loss.

2. **Function of Exoskeleton**: The primary functions of the exoskeleton are to provide protection to the organism and to prevent dehydration by minimizing water loss.

3. **Identifying Arthropods**: Arthropods are a diverse group of animals that include insects, arachnids (like spiders), crustaceans (like crabs), and others. They are characterized by having jointed limbs and segmented bodies.

4. **Composition of Exoskeleton**: The exoskeleton of arthropods is primarily made up of a substance called chitin. Chitin is a tough, flexible, and resilient material that contributes to the hardness of the exoskeleton.

5. **Conclusion**: Therefore, the exoskeleton of arthropods is made up of chitin.

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