| A | B |
|---|
| they have 3 germ layers | ectoderm, endoderm and mesoderm |
| platyhelminthes contains what type of worms | flatworms |
| they are acoelomates, which means | they have no body cavity |
| do they have organ systems | no |
| what type of symmetry do they have | bilateral |
| nerve system | nerve ladder |
| nerve ladders help to differenciate between ____ and ____ | left and right |
| sensory structures | eyespots, auricles |
| they have a complete or imcomplete digestive system | incomplete, no anus |
| what type of gut do they have | gastrovascular cavity |
| the gut is _____ to bring food to all areas of the body | branched |
| they use _______ to get rid of Nitrogen and wastes. | excretion |
| what kind of cells do they excrete with | flame cells |
| reproduce asexually how | regenerate |
| reproduce sexually how | exchange sperm, both carry offspring |
| they have both male and female organs, so they are | hermaphroditic |
| they evolved hooks and suckers to | holdfast inside a host |
| what did they specifically have to hold on with ( it was on the head) | scolex |
| name the planarians class | Tubellaria |
| name the flukes class | Trematoda |
| name the tapeworm class | Cestoda |
| all platyhemithes are | parasites |
