Natural Science CLEP Prep Practice Exam

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What is a common characteristic of vertebrates?

  1. Wings

  2. Turtles

  3. A backbone

  4. Hair

The correct answer is: A backbone

A common characteristic of vertebrates is having a backbone. This is what separates them from invertebrates, which do not have a backbone. While some vertebrates may have wings or hair, these traits are not universal among all vertebrates and therefore are not the defining characteristic. While turtles do have a backbone, this trait is not exclusive to them and thus is not a defining characteristic of vertebrates.

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