| Class Arachnida | spiders; tick; scorpion |
| Class Hexapoda | terrestrial, one pair of antennae, one/two pairs of wings; three pairs of legs; trachea |
| Phylum Cnidaria | stinging tentacled animals; radially symmetrical; two cell layers; mout surrounded by stinging tentacles; nerve network |
| Phylum Cnidaria | coral, hydra, jelly |
| Phylum Crustacea | two body parts; two pairs of antennae on the head; aquatic |
| Phylum Mandibulata | insects, millipedes, centipedes; three body parts; three pairs of legs; one/two pairs of wings; gas exchange through trachea |
| Phylum Nematoda | hookworm, fliaria worm |
| Phylum Porifera | sponge |
Drag corresponding items onto each other to make them disappear.
Start Game