1. Which invertebrate phylum is the largest? arthropods
2. What does the word arthropod mean? jointed foot
3. Describe the legs and body of an arthropod. Arthropods have jointed legs and segmented bodies.
4. How are the segments of an arthropod different from the segments of an earthworm? The segments of an earthworm are alike. The segments of an arthropod are different and have different functions.
5. What is an exoskeleton? a hard covering that protects the body of an arthropod
6. Why must an arthropod molt? As the arthropod grows, its exoskeleton becomes too small. It sheds the small exoskeleton and grows a new one.
7. What are crustaceans? Crustaceans are arthropods with at least five pairs of jointed legs and two pairs of antennae. They breathe with gills, and most have some sort of claw.
8 What are some examples of crustaceans? Possible answers: shrimp, lobsters, crabs, barnacles
9. How is a barnacle different from other crustaceans? It has a shell-like a mollusk and it attaches itself to a surface.
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