Why echinoderms are viewed as an example of how the classification of organisms on the basis of evolutionary relatedness can reveal much about natural selection. Introduction: Echinoderms are a large group of invertebrate animals that have spiny skin and show radial symmetry at some point in their lives.

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Chapter 11, Problem 15SA

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Why echinoderms are viewed as an example of how the classification of organisms on the basis of evolutionary relatedness can reveal much about natural selection.

Introduction:

Echinoderms are a large group of invertebrate animals that have spiny skin and show radial symmetry at some point in their lives.

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