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LS AD Chapter 2

Invertebrates 2

Mantle Tissue that covers the internal organs of mollusks. It produces shell.
Gill Organ for exchanging gases with the environment under water.
Open Circulatory System Blood is not always contained in a vessel. Open spaces surround internal organs, which get "bathed" in blood.
Radula Teeth-like structures of snails.
Gastropoda Translated as "stomach-footed". The class of Mollusks which includes the snails
Cephalo Means "head"
Cephalopoda Translated as "head-footed". The class of Mollusks which includes a nautilus.
Bivalvia Translated "two doors". The class of Mollusks which includes clams.
Annelida Translated as "little rings". Also known as segmented worms.
Molluska Translated as "soft-bodied". Includes shelled creatures of the sea and land snails.
Setae Bristle-like structures on earthworms used for grasping the walls of their burrow.
Crop Organ for holding food from the mouth.
Gizzard Organ for holding food from the crop. Acts like a stomach to grind food mechanically and chemically.
Oligochaeta Translated "few bristles". The class of Annelids that includes earthworms.
Polychaeta Translated "many bristles". The class of Annelids that includes marine worms.
Hirudinea The class of Annelids that includes leaches.
Arthropoda Translated "jointed legs". The phylum of creatures that includes insects, crustaceans, arachnids, and centipedes/millipedes.
Thorax The part of an insect body to which the legs are attached.
Exoskeleton Hard outer covering used for protection and provides camouflage.
Spiracles Holes found in the exoskeleton of insects through which gases are exchanged.
Metamorphosis The transformational change of insects from eggs to adults.
Echinodermata Translated "spiny-skinned". Phylum of creatures that includes seas stars, brittle stars, sand dollars, and sea urchins.
Tube Feet Used by echinoderms to move about.
Water-Vascular system A system for the exchange of gases and metabolic wastes through exposure to water.
Created by: MrGross



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