| A | B |
|---|
| Echinoderm | starfish, brittle star, sea cucumber, sand dollar, etc |
| Echinodermata | phylum name; means "spiny skin" |
| Tube Feet | structures that enable echinoderm animals to move |
| Water-Vascular System | the system that enables the tube feet to function |
| Chordate | another name for a vertebrate animal |
| Endoskeleton | a skeleton that is located inside an animal's body |
| Ectotherm | a "cold-blooded" animal |
| Endotherm | a "warm-blooded" animal |
| Gills | organs that allow for gas exchange in a water environment |
| Fins | special structures that help a fish move and steer itself in water |
| Scales | located on the skin of fish; provide protection |
| Cartilage | a special tissue that provides support and protection |
| Buoyancy | the ability to remain afloat |
| Swim Bladder | a sac located in fish that allows them to change their depth in the water |
| Spawning | a time of fish reproduction; females lay eggs and males fertilize the eggs |
| Extermal Fertilization | when the sperm fertilizes eggs outside of the female's body |
| Internal Fertilization | occurs when the sperm fertilizes the eggs inside the female's body |
| Jawless Fish | fish without jaws, can be parasitic, example would be a lamprey |
| Cartilaginous Fish | fish made up of cartilage; examples would be sharks and rays |
| Bony Fish | 95% of fish; made up of bones |
