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Vocabulary for Invertibrates

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.
Created by: madison.black