| A | B |
|---|
| Phylum Cnidaria | means "stinging cell"; includes jellyfish, coral, sea anemones, and the hydra |
| Tentacle | arm-like structure that is used for movement and grasping prey |
| Nematocyst | a stinging cell |
| Polyp | the sessile stage in a jellyfish's life cycle |
| Medusa | the free-swimming stage in a jellyfish's life cycle |
| Phylum Platyhelminthes | means "flat worm"; includes tapeworms, flukes, and planarians |
| Ventral | the "belly" area on an animal |
| Dorsal | the "back" of an animal |
| Anterior | the "front" or head region on an animal |
| Posterior | the "rear-end" region on an animal |
| Pharynx | a special tube that is used for feeding; ex. the planarian |
| Fission | a type of asexual reproduction; occurs when a parent organism splits into two new individuals |
| Proglottid | a reproductive segment found on a tapeworm; contains sperm and eggs |
| Cilia | tiny hair-like structures that usually help an organism move |
| Eyespot | a region on an organism that is used to detect light |
