echinoderm vocab only. a radially symmetrical marine invertebrate with an endoskeleton,...
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ECHINODERMVOCAB ONLY
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A radially symmetrical marine invertebrate with an endoskeleton, water-vascular system,
and tube feet such as a sea star, sea urchin or sea cucumber _________________________
Special type of radial symmetry in which body parts extend outward along 5 spokes _______________
One of the small calcium carbonate plates that forms the endoskeleton of echinoderms ________________
echinoderm
pentaradial
ossicle
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Surface of a starfish on which the mouth is located______________
One of the many small, flexible, fluid filled tubes that project from the body of an echinoderm and are used in locomotion, feeding, gas exchange, and nitrogen excretion _________________
Small pincher-like structure on the surface of certain echinoderms that keep the surface clean ________________
Oral surface (ventral)
Tube feet
pedicellaria
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Surface opposite the mouth and a starfish_______________
Sieve-like opening on the aboral surface of a starfish through which water enters the water vascular system _________________
A mass of nerve cells ________________
Aboral surface (dorsal)
madreporite
ganglion
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A network of water-filled canals in an echinoderm _____________
Part of the water vascular system that connects the madreporite and ring canal _____________
Bulb-like sac at the top of the tube foot which controls water entering and leaving the foot ________________
Water vascular system
Stone canal
ampulla
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Portion of an echinoderm’s stomach that is extruded through the mouth during feeding __________________
The fluid that is circulated through the body of an animal with an open circulatory system _________________
Winged larva seen in echinoderms ________________
Cardiac stomach
hemolymph
bipinnaria
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Special type of symmetry seen in starfish with 5 arms _____________
Development in which the offspring start as small versions of adults
Type of circulatory system in which blood is contained in vessels ___________________
Pentaradial symmetry
Direct development
closed
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In a sea star the stomach that is connected to the digestive glands__________________
The hemolymph-filled space or body cavity of some invertebrates _________________
One of the many hollow tubes that project from the surface of a sea star through which gas exchange and nitrogen excretion takes place ________________
Pyloric stomach
hemocoel
Skin gills
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Nerve that encircles the mouth in a sea star __________________
Organism whose embryonic blastopore becomes the anus _______________
Organism without a backbone ________________
Nerve ring
deuterostome
invertebrate
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Type of development in which offspring hatch as an immature larva and must change into their adult form _____________
Joining of an egg and sperm outside the female’s body _________________
Organism that lives in the ocean (salt water) ________________
indirect
external fertilization
marine
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Nerve that runs along inside the ambulacral ridge in each arm of a starfish _____________
Portion of the sea star’s water vascular system that runs along inside the ambulacral ridge in each arm _________________
Groove on the oral surface of a sea star that holds the tube feet ________________
Radial nerve
Radial canal
Ambulacral groove
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Greenish digestive enzyme that breaks down fat _____________
Space that surrounds the internal organs _________________
Type of skeleton found inside the body ________________
bile
coelom
endoskeleton
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Type of symmetry seen in echinoderms in which body parts are arranged around a central axis _____________
Development in which the offspring start as an immature larva and undergo metamorphosis to become adults_________________
Type of circulatory system in which blood is NOT contained in vessels and flows loose inside the body cavity and tissue spaces ___________________
Radial symmetry
Indirect development
open