Matching

____1.Invertebrates with radial symmetry that evolved from animals with bilateral symmetry.
____2. Invertebrates with radial symmetry and no true circulatory system.

____3. Invertibrates with exoskeletons

____4. Segmented worms

____5.Flatworms

____6. Roundworms

____7. Invertebrates with shells, generally aquatic.

____8.Simplest adn oldest of all invertebrates

a. platyhelminthes
b. porifera
c. arthropoda
d. annelida
e. cnidaria
f. nematoda
g. echinodermata
h.mollusca