Crustaceans are the only arthropods that have:
Correct answer: D. two pairs of antennae
- A. chitin in their exoskeleton
- B. chlicitae
- C. three pairs of legs
- D. two pairs of antennae
Explanation
Crustaceans are the only arthropods with two pairs of antennae, so option D is correct. All arthropods have chitin in their exoskeleton. Chelicerae are mouth parts present in some arthropods like arachnids, horseshoe crabs, and sea spiders, but they are absent in crustaceans. Crustaceans have five pairs of legs, not three.
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