Invertebrate Animal Flashcards
(23 cards)
Vertebrates
animals that have a backbone
Invertebrates
animals that do not have a backbone
Ganglion
a mass of nerve cells
Gut
a digestive tract
Coelom
a body cavity that contains internal organs
Bilateral Symmetry
types of animals in which their body has equal left and right sides
Radial Symmetry
types of animals in which their body is organized around the center
Asymmetry
types of animals in which their body that is not organized around a center
Sponges
an asymmetry animal in which water flows into their body and catch food and oxygen
Cnidarians
a radial symmetry animal who sting and poison their prey
Flatworms
a bilateral symmetry animal
Mollusks
a group of invertebrate animals that have complex ganglia that control breathing, movement, and digestion
Open circulatory system
a type of circulatory system that does not contain blood in vessels
Closed circulatory system
a type of circulatory system that does contain blood in vessels
Annelid worms
segmented worms
Exoskeleton
the external skeleton that supports and protects an animal’s body
Compound eye
a visual organ that helps animals distinguish brightness and color
Metamorphosis
the process of transformation from an immature form to an adult form in two or more distinct stages
Endoskeleton
an internal support structure of an animal, composed of mineralized tissue
Water vascular system
a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration
Antenna
are paired appendages used for sensing in arthropods
Consumer
organisms that need to eat food to obtain their energy. These organisms are called heterotrophs, meaning they must eat something else as food.
Coelom
the body cavity in metazoans, located between the intestinal canal and the body wall
