| A | B |
|---|
| heterotrophs | obtain and process pre-formed organic material |
| ingestion | taking in of food |
| digestion | the breakdown of large insoluble molecules to small soluble molecules |
| intracellular digestion | digestion with in the cell |
| extracellular digestion | digestion outside of the cell or organism |
| mechanical breakdown | food is broken down by physical means to increase surface area |
| chemical breakdown | food is broken down by enzymatic hydrolysis |
| egestion | removal of undigested material |
| rhizoids | anchors a fungus, secretes digestive enzymes and absorbs nutrients |
| pseudopods | "false feet" |
| oral groove | in paramecium, scoop like structure which guides food particles into the mouth and gullet |
| nematocysts | the capsules within cnidoblasts |
| crop | thin walled organ that temporarily stores food from the esophagus |
| gizzard | section of the invertebrate digestive tube with which mechanical digestion of food takes place |
| esophagus | connects the mouth to the stomach |
| endoderm | the inner layer of cells |
| ectoderm | the outer layer of cells |
| cnidoblasts | stinging cells in coelenterates |
| alimentary canal | the digestive tube |
| typhlosole | fold in the intestine wall that increases surface area |
