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Answer on Biochemistry Question for harshita

Question #39454
animals with 2 layered body wall enclosing a single cavity opening on one sidde only are one of the charecteristics of which phylum???
Expert's answer
These features are characteristics of the phylum Cnidaria and phylum Ctenophora. Their body wall consists of an ectodermal and an endodermal layer, sometimes with a jelly-like substance called mesoglea in between.

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