| A | B |
|---|
| cannot | animals ________________ make their own food |
| digest | animals ____________ their food |
| move | many animals ______________ from place to place |
| cells | animals have many ________________ |
| eukaryotic | animal cells are __________________ |
| vertebrates | animals with backbones |
| invertebrates | animals w/o backbones |
| radial symmetry | body parts arranged in a circle around a central point |
| bilateral symmetry | body parts arranged in the same way on both sides of its body |
| asymmetrical | symmetry of most sponges |
| sessile | organisms such as sopnges that remain attached to one place during their lifetime |
| plants | early scientists classified sponges as ___________ because they didn't move |
| pores | cover the body of a sponge |
| Porifera | phylum name of sponges |
| collar cells | cells that line the inside of the sponge and help move water |
| spicules | sharp, pointed structures that provide structure for sponges |
| regeneration | ability of organism to replace body parts |
| hermaphrodite | animal that produces sperm and eggs |
| larva | young organism |
| radial | symmetry of cnidarians |
| tentacles | surround the mouth of cnidarians and have stinging cells |
| polyp | like a vase |
| medusa | like a bell |
| nerve net | system of nerve cells |
| bilateral | symmetry of worms |
| Platyhelminthes | phylum of worms |
| parasite | depends on another organism for food and a place to live |
| free-living | don't depend on one particular organism for food or a place to live |
| mouth | the only body opening planarians have |
| pharynx | connects the mouth and digestive tract |
| tapeworm | doesn't have a mouth or digestive system |
| Platyhelminthes | tapeworm phylum |
| heartworm | disease in dogs caused by roundworms |
| Nematoda | roundworm phylum |
| fluid | the body of a roundworm is a tube within a tube with ___________ in between |
| roundworm | has 2 body openings a mouth and an anus |
| Trichinella worms | cause the disease trichinosis |
| cyst | young worm with a protective covering |
