animals and behavior 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
Ganglion
the digestive tract
Gut
a body cavity that contains the internal organs
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
symmetry around a central axis, as in a starfish or a tulip flower.
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
Cnidarians
Platyhelminthes, or platyhelminths are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
Flatworms
constitute the phylum Nematoda, with plant-parasitic nematodes being known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments.
Roundworms
an invertebrate of a large phylum which includes snails, slugs, mussels, and octopuses.
Mollusks
also known as the ringed worms or segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches
Annelid worms
