| A | B |
|---|
| Heterotroph | acquires food from another organism |
| Sexual reproduction | production of sperm and egg |
| parazoans | no true tissues |
| eumatazoans | has tissues and in some cases organs |
| phylum porifera | pore bearing, sponges |
| phylum cnidaria | stinging cells, jellyfish |
| phylum coelenterata | bag like, jellyfish |
| phylum platyhelminthes | flatworm, planaria, fluke and tapeworm |
| phylum nematoda | roundworm, ascaris, elephantiasis, hokworm |
| phylum arthropoda | jointed legged, insects, spiders, centepedes, millipedes, crayfish |
| phylum echinodermata | spiny skinned, starfish |
| phylum mollusca | soft bodied animals, snails, slugs, octopus |
| radial symmetry | divide down the center point in any direction get equal parts |
| bilateral symmetry | divide body in only one direction to get equal parts |
| ectoderm | embryonic germ layer becomes the outer covering |
| endoderm | embryonic germ layer becomes internal organs |
| mesoderm | embryonic covering becomes muscle |
| acoelomates | no body cavity |
| pseudocoelomate | false body cavity |
| coelomate | true body cavity |
| phylum anneldia | segmented worms, earthworm and leeches |
| open circulatory system | blood bathes the organs |
| nephridia | excretory structure in earthworm |
| malpighian tubules | excretory structure in grasshopper |
| green glands | excretory structure in crayfish |
| 5 classes of arthropods | arachnida, crustacea, chilooda, diplopoda, insecta |
| exoskeleton | hard outer covering made of chitin |
| hermaphrodite | having both male and female sex organs |
| intestine | digest and absorb |
| liver | makes bile which emulsifies fat |
| setae | bristles in earthowrm used for movement |
| aortic arches | 5 hearts in the earthworm |
