| A | B |
|---|
| Animals without a backbone | Invertebrates |
| What percent are invertebractes | 97% |
| Round; Equal parts radiate out from a central point | Radial Symmetry |
| Can be divided into two equal halves | Bilateral |
| What symmetry are sponges | asymmetrical |
| attached to a surface or bottom | Sessile |
| allows water to pass through the sponge | Ostia |
| Porifera | Sponges |
| Choanocytes (Scientific Name) | Collar Cells |
| Collar Cells | line interior canals of cell |
| flat cells that cover the exterior of body | Pinacocytes |
| cells with a pore to allow water to pass into body | Porocytes |
| support system | Spongin |
| support structure made out of silica | Spicules |
| free floating; mouth downward | Medusa |
| sessile; mouth upward | Polyp |
| stinging cells | Cnidocytes |
| stinging barb | Nematocyst |
| stinging animals (scientific name) | Cnidarians |
| small, calcareous bodies in fluid filled chambers | Statocyst |
| unusual species with a coony of polyps carried by a gas filled float | Physalia |
| True Jellies (Scientific Name) | Class Scyphoza |
| Class Scyphoza | free swiming lage medusa forms |
| Class Anthoza | Corals, Aemones, Gorgonians |
| Comb Jellies ( Scientific Name) | Ctenophores |
| Comb Jellies | 8 rows, no nematosysts, |
| long sticky tentacles used to capture prey | colloblasts |
| first brain, flukes, tapeworms, turbellarians | flatworm |
| Flatworm (Phylum?) | Platyhelminthes |
| free living, small, no harm | turbellarians |
| parastic, reproductive system | flukes |
| no digestive system, | tapeworms |
| head ares. hooks & sucker | scolex |
| Ribbion Worm (Phylum?) | Nemertea |
| Ribbion Worm | shallow water, complete digestive system |
| Round Worm (Phylum?) | Nematoda |
| Round Worm | important decompsers |
| Earthworm (Phylum?) | Annelida & Segmented |
| Earthworm | developed nervous system |
| live in hydrothermal vents, most diverse worms | Polychetes |
| Beard Worms (Phylum?) | Pogonophorans |
| Beard Worms | red tip, deep water, hydrothermal vents |
