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12 terms

Mollusk/Arthropods Flashcards

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Mantle
Thin layer of tissue that covers a mollusk's body organs
Gills
Organs that exchange carbon dioxide for oxygen in the water
Open Circulatory System
Blood circulation system in which blood moves through vessels and into open spaces around the body organs
Radula
Tongue-like organ with rows of teeth used to scrape and tear food
Muscular Foot
Muscle on the bottom of most mollusks that allows them to move through their environment
Closed Circulatory System
Blood circulation system in which blood moves through the body in closed vessels
Jet Propulsion
Movement through the water by pushing water out through a cavity in the organisms body
Appendages
Jointed structures of arthropods, such as legs, wings, or antennae
Exoskeleton
Thick, hard, outer covering that protects and supports arthropods bodies and provides places for muscles to attach
Molting
Shedding and replacing of an arthropod's exoskeleton
Spiracles
Openings in the abdomen of insects through which oxygen enters and exits
Metamorphosis
Process in which many insect species change their body to become adults