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4 votes
The phyla porifera, cnidaria, and ctenophora are ________.

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User Sroebuck
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2 Answers

1 vote
Diploblastic organisms Diblastica - they do not have mesoderm or coeloma.
answered
User Gary McGowan
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8.4k points
4 votes
The most ancient of all animal lineages.
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User Guleryuz
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8.6k points
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