Sowbugs are really crustaceans, not insects. Therefore, a sowbug does not have __________.

• A. an exoskeleton
• B. an open circulatory system
• C. antennae
• D. jointed appendages
• E. three pairs of legs

Answer: (E)

Verified step by step guidance

1. Understand the classification of sowbugs: Sowbugs are crustaceans, which are a group of arthropods that also includes crabs, lobsters, and shrimp.
2. Identify the characteristics of crustaceans: Crustaceans typically have an exoskeleton, jointed appendages, and antennae. They also have an open circulatory system.
3. Compare crustaceans to insects: Insects, another group of arthropods, are characterized by having three pairs of legs, which is a key distinguishing feature.
4. Analyze the given options: The options provided are characteristics that could belong to either crustaceans or insects.
5. Determine the correct answer: Since sowbugs are crustaceans and not insects, they do not have the characteristic feature of insects, which is three pairs of legs.