Invertebrate Animal Vocab Flashcards
Vertebrates
an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes
Invertbrates
an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc. The invertebrates constitute an artificial division of the animal kingdom, comprising 95 percent of animal species and about 30 different phyla.
Consumer
Ganglion
a structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber.
Gut
the lower alimentary canal or a part of this; the intestine
Coelom
the body cavity in metazoans, located between the intestinal canal and the body wall
Bilateral Symmetry
the property of being divisible into symmetrical halves on either side of a unique plane
Radial Symmetry
symmetry around a central axis, as in a starfish or a tulip flower.
Asymmetry
lack of equality or equivalence between parts or aspects of something; lack of symmetry
Sponges
a primitive sedentary aquatic invertebrate with a soft porous body that is typically supported by a framework of fibers or calcareous or glassy spicules. Sponges draw in a current of water to extract nutrients and oxygen.
Cnidarians
Flatworms
a worm of a phylum which includes the planarians together with the parasitic flukes and tapeworms. They are distinguished by having a simple flattened body which lacks blood vessels, and a digestive tract which, if present, has a single openin
Roundworms
a nematode, especially a parasitic one found in the intestines of mammals
Mollusks
Open circulatory system
