Which term refers to animals with a spinal column?

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Prepare for the IB Marine Science SL Exam. Study with flashcards and multiple choice questions that include hints and explanations. Ace your exam!

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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