Answer to Question #39454 in Biochemistry for harshita
animals with 2 layered body wall enclosing a single cavity opening on one sidde only are one of the charecteristics of which phylum???
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.