Wings allow insects to move around their habitat quickly, and to escape predators. Their chitinous exoskeleton helps them to retain water internally while living on dry land.
Work Step by Step
Review Concept 33.4 and use your imagination. The importance of wings is explicitly discussed in the text, and early in the description of insects, their predominance on dry land is mentioned. Your imagination will help you see how a covering like the exoskeleton can help keep tissues hydrated in that habitat.