Members of the phylum __________ are characterized by radial (or biradial)symmetry,diploblastic organization,a gastrovascular cavity,and cnidocytes.
A)Mesozoa
B)Placozoa
C)Cnidaria
D)Porifera
E)Ctenophora

Question

Quizplus · Accepted Answer

The characteristics listed in the question are specific to the phylum Cnidaria, which includes organisms such as jellyfish, corals, and sea anemones. Mesozoa and Placozoa are very small, simple phyla with varying degrees of complexity, but they do not have the specific characteristics listed in the question. Porifera (sponges) have asymmetrical or radial symmetry, but lack diploblastic organization and a gastrovascular cavity. Ctenophora (comb jellies) have radial symmetry, but differ from cnidarians in having a complete digestive system and colloblasts, rather than cnidocytes.

Members of the Phylum __________ Are Characterized by Radial (Or