| Term | Definition |
|---|
| invertebrate | An animal that does not have a back bone. |
| ganglion | A mass of nerve cells |
| gut | The digestive tract. |
| coelom | A body cavity that contains the internal organs. |
| bilatterial | two sides of the body miror each other |
| Radial symmetry | the body is organized around the center, like spokes on a wheel. |
| asymetrous | body has no symmetry and cannot draw a straight line to divide the body or the is not organized around a center. |
| neurons | special tissues that make fibers that allow animals to sense their environment and carry messages around the body. |
| nerve cords | packs of the neurons that carry messages along a single path. |
| sponges | simplest vertebrate that is a aesynmethcal |
| pores | holes outside a sponges body. |
| osculum | hole that the top of a sponge where water leaves the body. |
| regenerate | ability to grow back a missing part that sponge has |
| spicules | skeleton of a sponge that is made of small hard fibers |
| ciniderates | group of inertabrates that have stinging cells. |
| bodyformsofidarians | medusa |
| kinds of cnidiarns | hydrozoans, jellyfish, sea anemones, and corals. |
| jelly fish | catch prey with their tentacles and spend most of their life as a medusa. |
| hydrozoan | live in fresh water & marine environments spend entire life a pylp. |
| flat worms | simplest worms that are divided into 3 classes : planrians and marines flat worms, flukes, & tape worms. |
| sensory lobs | bumps on each side of the head of a flat worm used for detecting food. |
| planarians | live in fresh water takes on streams and on damp places on land. They are predators with a well developed nervous system and a brain. |
| fluke | a parasite that lives and reproduces inside the body of the other animals. Has special suckers that hooks for the attaching to other animals. |
| tape worms | simular to the flukes but have a unique body that attaches to the body to the insects of another animal to absorb nutrients. |
| round worms | have bodies that are long, slim, and round and look like spghetti. |
| trichinella and spiralls | a parasitic round worm that is passed to people from the infected part aand causes the disease called trichinosis which causes fever, fratique and digestive problems. |
Combine with other sets
Share on Facebook
Share on MySpace