Which term refers to animals with a spinal column?

Study for the IB Marine Science Standard Level Exam. Prepare with interactive quizzes and in-depth explanations. Use our resources to excel in your marine science knowledge!

Multiple Choice

Which term refers to animals with a spinal column?

Explanation:
Having a spinal column is the defining feature of vertebrates. The backbone protects the spinal cord and provides structural support, enabling more complex movement and nervous system organization. Therefore, animals with a spinal column are vertebrates. Invertebrates lack a backbone, and the other terms refer to specific invertebrate groups—tunicates and echinoderms do not have a vertebral column.

Having a spinal column is the defining feature of vertebrates. The backbone protects the spinal cord and provides structural support, enabling more complex movement and nervous system organization. Therefore, animals with a spinal column are vertebrates. Invertebrates lack a backbone, and the other terms refer to specific invertebrate groups—tunicates and echinoderms do not have a vertebral column.

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