Term | Definition |
Appendage | Structure such as a claw,leg,or antenna that grows from the body. |
Arthropod | Bilaterally symmetrical animal with jointed appendages a protective exoskeleton, and a segmented body. |
Closed Circulatory System | A type of blood circulatory system in which blood is transported through blood vessels rather than surrounding the organs. |
Cnidarian | Radially symmetrical, hollow bodied animal with two cell layers organized into tissue. |
Exoskeleton | Rigid, protective body covering of an arthropod that supports the body and reduces water loss |
Gill | Organ that allows a water dwelling animals to exchange carbon dioxide for disolved oxygen in the water |
Invertibrate | An animal without a Backbone |
Mantle | Thin layer of tissue that covers a mollusks body and that can secrete a shell |
Medusa | Free swimming bell shaped body form in the life cycle of a Cnidarian |
Metamorphosis | Change of body form that can be completed (egg,larva,dupa,adult) or incomplete |
Mollusks | Soft bodied,bilateral symmetrical invertibrate with large muskular foot,mantle,and an open circulatory system; usually have a shell. |
Open Circulatory System | A type of blood circulatory system that lacks blood vessels and in which blood washes over the organs. |
Polyp | Vase shaped, usually sessile body form in the life cycle of a cnidarian. |
Radula | Scratchy, tonguelike organs in many mollusks that has rows of teeth like projections used to scrape and grate food. |
Symmetry | Arrangement of individual body parts; can be raidial,bilateral,or asymmetrical. |