Animal Kingdom 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
Invertebrates
a person or thing that eats or uses something
Consumer
a structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber
Ganglion
the stomach or belly
Gut
the body cavity in metazoans, located between the intestinal canal and the body wall
Coelom
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
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
an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates
Cnidarians
a worm of a phylum that includes the planarians together with the parasitic flukes and tapeworms. They are distinguished by having a simple flattened body that lacks blood vessels, and a digestive tract that, if present, has a single opening
Flatworms
a nematode, especially a parasitic one found in the intestines of mammals
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
they pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells
Open circulatory system
