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Animal Features
for phylogenic classification
5
Biology
Undergraduate 2
01/28/2009
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Term
3 types of symmetry in animals
 Definition
None
Bilateral Symmetry
Radial Symmetry
Term
Cepalization
 Definition
Structures for feeding, sensing, and processing information are concentrated on the anterior or head region

> Posterior regions are specialized for locomotion
> Bilateral symmetry and cephalization enable rapid, direct movement and hunting
Term
Acoelomate
 Definition
Triploblast having no body cavity
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