EBK LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 8220103935432
Author: Sadava
Publisher: MAC HIGHER
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Chapter 30.5, Problem 1R
Summary Introduction
To review:
The basis of the independent evolution of the nervous system in ctenophores, cnidarians, and bilaterians.
Introduction:
Ctenophores are primitive marine animals consisting of colloblasts in their tentacles and eight rows of cilia all over their body. Cnidarians are a group of animals that possesses cnidocytes in their tentacles and display two distinct body forms. Bilaterians are triploblastic animals with bilateral body symmetry with simple to complex body organization.
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