BIOLOGY: CONCEPTS AND INVEST. ACCESS
BIOLOGY: CONCEPTS AND INVEST. ACCESS
5th Edition
ISBN: 9781264448678
Author: Hoefnagels
Publisher: MCG
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Chapter 21.9, Problem 4MC
Summary Introduction

To determine:

The strategy used for feeding, exchange of gases, sensing the environment, excretion, locomotion, reproduction and protection in echinoderms.

Concept introduction:

Echinoderms are the invertebrate chordates included under the largest clade characterized by bilateral symmetry and three germ layers. Echinoderms are deuterostomes that means anus develops from the first opening in the embryo at gastrulation. Echinoderms have spiny skin and water vascular system, which distinct them from other animals. Sea star and starfish are examples of echinoderms.

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can you help? I think its B but not sure
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