| A | B |
|---|
| Cladogram | a diagram showing evolutionary history based on shared characteristics |
| Shared Derived Characteristic | A characteristic that is unique to a clade |
| Shared Ancestral Characteristic | A characteristic that originated in the ancestor of a taxon |
| Coelem | True body cavity (surrounded by mesoderm) |
| Pseudocoelem | "false" body cavity (between mesoderm and endoderm) |
| Acoelem | No body cavity |
| Exoskeleton | Hard exterior skeleton made of chitin found in arthropods |
| Radial Symmetry | Symmetry from the top down- like spokes on a wheel |
| Bilateral Symmetry | Symmetry side to side- like us! |
| Deuterostome | Blastopore forms the anus |
| Protostome | Blastopore forms the mouth |
| Archaea | Domain of prokaryotic organisms found in extreme environments |
| Bacteria (Eubacteria) | Domain of prokaryotes that are ubiquitous |
| Fungi | Group of organisms characterized as eukaryotic heterotropsh (decomposers) with a cell wall |
| Plants | Group of organisms characterized as multicellular eukaryotic autotrophs with a cell wall |
| Protists | Eukaryotic organisms thought to be the ancestor of multicellular eukaryotic life (plants, animals, fungi) |
| Animals | Group of organisms characterized as multicellular eukaryotic heterotrophs with no cell wall |
| Porifera | No true (specialized) tissue; sponges |
| Cnidaria | Radial symmetry, gastrovascular cavity; jellyfish |
| Platyhelminthes | Bilateral symmetry, acoelemate; flatworms |
| Mollusca | Bilateral symmetry, coelemates, hard shell; clams |
| Annelida | Bilateral symmetry, coelemate, segmented body, gas exchange through skin, closed circulatory system; earthworm |
| Nematoda | Bilateral symmetry, pseudocoelemate, unsegmented body; roundworms |
| Arthropoda | Bilateral symmetry, coelemates, segmented body, exoskeleton of chitin; insects |
| Echinodermata | Bilateral embryo, radial adult, deuterostome, coelemate, endoskeleton; sea star |
| Chordata | Bilateral symmetry, coelemate, deuterostome, dorsal nerve cord, endoskeleton; human |
| Tracheids | Plants with vascular tissue |
