invertabrare Flashcards
an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
Vertebrates
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.
Invertebrates
a person or thing that eats or uses something.
Consumer
a mass of nerve cells
ganglion
the digestive tract
gut
a body cavity that contains the internal organs
coelom
a ciculatary systems were fluids are contained in vessels
open circulatory system
the property of being divisible into symmetrical halves on either side of a unique plane.
Bilateral Symmetry
symmetry around a central axis, as in a starfish or a tulip flower.
Radial Symmetry
lack of equality or equivalence between parts or aspects of something; lack of symmetry.
. Asymmetry
members of the phylum Porifera,
Sponges
Cnidaria is a phylum containing over 10,000 species of animals found exclusively in aquatic environments
Cnidarians
a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates
Flatworms
he nematodes or roundworms constitute the phylum Nematoda. They are a diverse animal phylum inhabiting a broad range of environment
Roundworms
an invertebrate of a large phylum that includes snails, slugs, mussels, and octopuses. They have a soft, unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell.
Mollusks