Which of these would be classified as a vertebrate?

Prepare for the NLN PAX Science Exam with flashcards and multiple choice questions. Each question includes hints and detailed explanations to boost your confidence and exam readiness.

Multiple Choice

Which of these would be classified as a vertebrate?

Explanation:
Vertebrates are animals with a backbone or spinal column. The snake fits this definition because it has a chain of vertebrae forming a spinal column. The other animals don’t have backbones: earthworms lack a vertebral column altogether, starfish are echinoderms without a spine, and lobsters have an external skeleton (an exoskeleton) rather than a backbone. So, among these, the snake is the one classified as a vertebrate.

Vertebrates are animals with a backbone or spinal column. The snake fits this definition because it has a chain of vertebrae forming a spinal column. The other animals don’t have backbones: earthworms lack a vertebral column altogether, starfish are echinoderms without a spine, and lobsters have an external skeleton (an exoskeleton) rather than a backbone. So, among these, the snake is the one classified as a vertebrate.

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