NAME __________________________________________ DATE _________________ HOUR____________

LOW INVERTEBRATES – 1

LOWER INVERTEBRATE PHYLUM

Completely sessile

All marine

Have pores

Filter feeders

Asymmetrical

Radially symmetrical

Bilateral symmetry

Has no tissues

Shows cephalization

Has a nerve net

Has stinging cells

Has a gastrovascular cavity

Polyp/medusa life cycle

Can be parasitic

Complete digestive system

PORIFERA

These are the:

_____________________

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

CNIDARIA

These are the:

_____________________

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

PLAYTHELMENTHESE

These are the:

_____________________

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

NEMATODA

These are the:

_____________________

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

DIRECTIONS: Use the notes packet we completed during the class presentations and your text book to complete the following table. Place an X in every box that matches a group of animals with one of their characteristics.