Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 32, Problem 4TYU
Summary Introduction

Introduction: The coelomate (main body cavity) phyla are divided into two distinct categories: Protostomes and Deuterostomes. The members of phylum annelida are considered as members of Lophotrochozoa (clade of the protostome animals) that also includes molluscs and flatworms (acoelomate).

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From Sea to Changing Sea | Early Life in the Oceans || Radcliffe Institute; Author: Harvard University;https://www.youtube.com/watch?v=Ac0TmDf5Feo;License: Standard youtube license