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

c. cnidaria - flatworms, gastrovascular cavity, acoelomate

d. platyhelminthes - radial symmetry, polyp and medusa body forms

Question

Bennett Snyder

Biology

11 January, 17:23

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

c. cnidaria - flatworms, gastrovascular cavity, acoelomate

d. platyhelminthes - radial symmetry, polyp and medusa body forms

+2

Answers (1)

Know the Answer?

Rogelio Mcconnell · Answer 1

The answer is B

The phylum Nematoda (roundworms) is one of the most common phyla.

There more than 15,000 known species of roundworms, however, there are many thousands of individual varieties nematodes, as well.