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2 votes
Which characteristic is unique to vertebrates?

A) they all have a well-defined skeleton

B) they have no defined organ systems

C) they have bilateral symmetry

D) they have an exoskeleton


2 Answers

3 votes

Answer:

Answer is A)They have a well-defined skeleton

Step-by-step explanation:

most reasonable answer

User Tomascharad
by
7.9k points
1 vote

Answer: They have well-defined skeleton.

Step-by-step explanation:

This is because the vertebrates are uniquely characterised by the presence of the bones.

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