Answer
In an embryo state, most chordates have a notochord.
Work Step by Step
As above
Biology 2010 Student Edition
by Miller, Kenneth R.; Levine, Joseph S.
Published by
Prentice Hall
ISBN 10:
9780133669510
ISBN 13:
978-0-13366-951-0
Chapter 25, Introduction to Animals - 25.1 - What is an Animal? - 25.1 Assessment - Page 735: 2b
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