Biology, 02.08.2019 02:20 AlaishaWiseBrown

Members of which animal phylum have a true coelom (body cavity)?
a) porifera.
b) echinoderms.
c) cnidaria.
d) ctenophores.

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Members of which animal phylum have a true coelom (body cavity)?
a) porifera.
b) echin...