Answer

Which of the following combinations correctly matches a phylum to its description

A) Echinodermata — bilateral symmetry as a larva, water vascular system
B) Nematoda — segmented worms, closed circulatory system
C) Cnidaria — flatworms, gastrovascular cavity, acoelomate
D) Platyhelminthes — radial symmetry, polyp and medusa body forms


A