Differentiate between a diploblastic and a triploblastic animal.

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Criteria Diploblastic animals Triploblastic animals

Number of germ layers Two (endoderm and ectoderm) Three (endoderm, mesoderm and ectoderm)

Body cavity Absent Absent or present

Examples Members of phylum Coelenterata. Members of phylum Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca,
Echinodermata, Chordata.

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Differentiate between a diplobastic and a triploblastic animal.

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Criteria	Diploblastic animals	Triploblastic animals
Number of germ layers	Two (endoderm and ectoderm)	Three (endoderm, mesoderm and ectoderm)
Body cavity	Absent	Absent or present
Examples	Members of phylum Coelenterata.	Members of phylum Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata, Chordata.