Look for the terms Acoelomate , Pseudocoelomate , and Coelomate . This is a major divider in animal complexity. 3. The Survey: Kingdom Animalia

Pay special attention to Echinoderms (starfish) and Chordates.

How animal cells differ from plants (no cell walls, presence of centrioles) and how they form the four basic tissues: epithelial, connective, muscular, and nervous.

Start with Porifera (sponges) and move through Cnidarians, Platyhelminthes (flatworms), Mollusks, Annelids, and the massive group of Arthropods (insects/spiders).

Their roles as predators, prey, or decomposers in an ecosystem. Study Tip: The "Type Study" Method

Does it have two layers (diploblastic) or three (triploblastic)?

This is the "meat" of the textbook. Don't memorize every species; focus on the of each Phylum: