| A | B |
|---|
| Porifera | Body in two cell layers; numerous pores; fresh or salt water dwellers |
| Coelenterata | Freeswimming; bag-like body; tentacles, stinging capsules; solitary or colonial; marine or fresh water dwellers |
| Platyhelminthes | Flat, ribbonlike body; unsegmented; head with sense organs; 2 nerve cords; no circulatory, respiratory, skeletal systemslive on land or water |
| Nematoda | Slender, elongated tail; unsegmented body; freeliving or parasitic; bilaterally symmetrical |
| Annelida | Segmented body; all organ systems present; bristles and spiral cleavage; parapodia present; terrestrial, fresh water, or marine dwellers |
| Rotifera | Crown of cilia on anterior; chitin-like jaws; digestive system; cylindrical body |
| Echinodermata | Pentaradially symmetrical; spiny plates; tube feet for locomotion; digestive and nervous system present; endoskeleton; eyespot; sometimes have tentacles; marine dwellers |
| Mollusca | Soft body; 2 part body: head-body, visceral mass; covered by mantle; rasping tongue (radula); terrestrial, fresh water, or marine dwellers |
| Arthropoda | Segmented body; paired, jointed appendages; bilaterally symmetrical; chitinous exoskeleton; terrestrial, aquatic |
| Chordata | Bilaterally symmetrical; dorsal nerve cord; tail; vertebrate present; terrestrial or aquatic |
| Tracheophyte | vascular system; true roots, stems, and leaves |
| Bryophyte | simple stem with rootlike and leaflike structures; reproduce with spores |
| Slime Mold | mass of streaming cytoplasm; many nuclei; stalks form spores; flagella join to creat amoebic form |
| Algae | have chlorophyll; unicellular or in colonies |
| Protozoans | Animal-like; unicellular; |
| Bacteria | Unicellular; circular DNA chromosome; heterotrophic or autotrophic; round, rod-shaped, or spiral |
| Blue-Green Bacteria | cell wall and photosynthetic pigments present; lacks organelles |
