Loose Leaf For Integrated Principles Of Zoology
Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Chapter 17, Problem 1FFT
Summary Introduction

To describe: The morphological features that need to be changed to produce an unsegmented body cavity.

Introduction: Annelids are classified based on their characters, morphology, anatomy, and most importantly their phylogeny. Some examples are marine bristle worms, leeches, earthworms.

Summary Introduction

To describe: The evidence of the transition between segmented and unsegmented body coelom in annelids.

Introduction: Phylum Annelida is a large phylum consisting of more than 22000 species. The members of these phylum are invertebrates having triploblastic cleavage.

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Review the extent of segmentation in Polychaetes, Leeches, Siboglinids, Echicrans, and Sipunculans. Which morphological features must change to produce an unsegmented body cavity? Is there evidence of transitional stages for these features?
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