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23 Cards in this Set
- Front
- Back
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Sessile |
describes an organisms that remains attached to one place during most of its life time |
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Hermaphrodite |
animal that produces both sperm and eggs in the same body
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Polyp |
cnidarian body type that is vase shaped and is usually sessile |
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medusa |
cnidarian body type that is bell- shaped and free swimming |
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Tentacle |
arm like structures that has stinging cells and surrounds the mouth of most cnidarian |
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Stinging cell |
capsules with coiled trigger like structures that help cnidarian capture food |
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Free living organism |
organisms that does not depend on another organism for food or a place to live |
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Anus |
opening at the end of the digestive track through witch waste leaves the body |
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Mantle |
covers the body organs |
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Gill |
Organs exchange carbon dioxide for oxygen in the water |
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Open circulatory system |
blood circulation system in which blood moves through vessels and into open spaces around the body organs |
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Radula |
in gastropods, the tongue like organ with rows of teeth used to scrape and tear food |
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Closed circulatory system |
Closed circulatory system- blood circulation system in which blood moves through the body in closed vessels |
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Setae |
bristle like structures on the outside of each body segmented that helps segmented warms move |
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Crop |
digestive system sac in which earthworms store ingested soil |
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Gizzard |
muscular digestive system structure in which earthworms grind soil and organic matter |
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Appendage |
jointed structures of arthropods, such as legs, wings, or antennae
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Exoskeleton |
thick, hard outer covering that protects ad supports arthropod bodies and provides places for muscles to attach |
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Molting |
shedding and replacing of an arthropod's exoskeleton |
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Spiracle |
opening in the abdomen and thorax of insects through air enters and waste gases leave |
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Metamorphism |
process in which many insect species changes their body form to become adults: can be complete or incomplete |
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Water |
vascular system |
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Tube feed |
hydraulic, hollow, thin-walled, tubes that end in suction cups and enable echinoderms to move |
