Invertebrate Animals Flashcards
Vertebrate
an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
Invertebrate
an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate
Consumer
An organism that generally obtains food by feeding on other organisms or organic matter
Ganglion
Mass of nerve tissue; a group of nerve cell bodies
Gut
The portions of the alimentary canal, particularly the stomach and the intestines
Coelom
A coelom is a fluid-filled body cavity that is completely lined by tissue created from the mesoderm
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
Any of numerous aquatic, chiefly marine invertebrate animals of the phylum Porifera.
Cnidarians
any invertebrate animal, as a hydra, jellyfish, sea anemone, or coral, considered as belonging to the phylum Cnidaria
Flatworms
Any of the worms belonging to the phylum Platyhelminthes, characterized by a flattened and bilaterally symmetrical body.
Roundworms
A type of parasitic worm that hatches in the intestines and lives there.
Mollusks
Any of a large phylum of invertebrate animals with a soft unsegmented body usually enclosed in a calcareous shell broadly
Open Circulatory System
pumps blood into a hemocoel with the blood diffusing back to the circulatory system between cells.