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23 Cards in this Set
- Front
- Back
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Mollusk |
A soft bodied invertebrate animal has external or internal shell, a foot, a mantel, and visceral mass. |
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Foot |
The muscular structure in molluscs that usually contains the mouth and other feeding structure |
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Mantel |
Thin, delicate layer of tissue that covers most of a mollusks body and secretes the shell when one is present |
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Shell |
Structure of mollusks made by glands in the mantel that secrete calcium carbonate |
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Visceral mass |
Structure in mollusks that contains the internal organs |
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Radula |
In some mollusks, layer of flexible skin with hundreds of tiny teeth used for feeding |
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Gill |
Respiratory structure in aquatic animals |
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Nephridium |
Tube shaped excretory organ used to remove ammonia from the blood and release it from the body |
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Gastropod |
Mollusk that moves by means of broad muscular foot located on its central side, usually has one piece shell for protection |
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Bivalve |
Mollusk that lives within a shell made of two sections that are hinged together |
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Cephalopod |
Marine mollusk whose head is attached to its foot, which is divided into tentacles |
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4 classes in mollusks |
Gastropoda (snails/slugs) Bivalvia (clam/muscle) Amphinera (chiton) Class Cephalopoda (squid/octo) |
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Echinoderm |
Spiny skinned animal that belongs to the phylum echinodermata. Is a invertebrate characterized by five - part radial symmetry, internal skeleton, water vascular system, tube feet |
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Water vascular system |
Internal network of fluids filled canals involved in feeding, respiration, internal transport, elimination of wastes, and movement in Echinoderms |
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Chordate |
Animal that posses a notochord, a hollow dorsal nerve cord, and a pharyngeal slits at some time in its development |
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Notochord |
Flexible supporting rod that runs along the dorsal surface of the body and is found in all chordates at some point in their development |
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Hollow dorsal never cord |
Cord that runs across the surface of a chordate and is connected by nerves to internal organs, muscles, and sense organs |
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Pharyngeal slit |
Structure that appears in pairs in the throat region of a chordates body |
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5 classes of Echinoderms |
Ophiuroidea (brittle star)
Asteroidea (sea star)
Holothuroidea (sea cucumber)
Echinoidea (sea urchin/sand dollar)
Crinoidea (feather star) |
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What kind of circulatory system do echinoderms have? |
Open circulatory system |
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How do echinoderms get rid of waste |
They excrete it through tube feet |
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What kind of digestive system do echinoderms have? |
One way digestive system |
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Sieve plate |
Tube that brings water in the mollusk |
