Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 25, Introduction to Animals - Assessment - 25.1 What is an Animal? - Understand Key Concepts/Think Critically - Page 746: 8

Answer

There are two major classes of animals: a. Invertebrates: lacking backbone b. Chordates: those who have a backbone

Work Step by Step

As above
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