30. Overview of Animals
Overview of Animals
Multiple Choice
Multiple ChoiceOne of the primary developmental/anatomical characteristics distinguishing the major animal phyla is the condition of the body cavity. A pseudocoelomate animal is one in which the body cavity is __________.
A
bounded completely by mesoderm
B
filled by a solid mass of mesoderm
C
bounded completely by endoderm
D
bounded partly by ectoderm
E
lined on one side by mesoderm and on the other side by endoderm
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