Campbell Biology (10th Edition)
Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
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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Which of the following features do sponges lack that some other animals have? (a) segmented body plan (b) symmetrical body plan (c) backbone (d) all of the above
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Sponges (Phylum Porifera) are the basal taxon to animals and were once thought to belong to plants.  1) Identify three characteristics that distinguish sponges from plants.  2) Identify three characteristics (present or absent) that distinguish sponges from other animal taxa.
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