animal kingdom Flashcards
Vertebrates
An animal that has a backbone.
Invertebrates
An animal that does not have a backbone.
Consumer
An organism that eats other organisms or organic matter.
Ganglion
A mass of nerve cells.
Gut
The digestive tract.
Coelom
A body cavity that contains the internal organs.
Bilateral Symmetry
A basic body plan in which the left and right sides of the organism can be divided into approximate mirror images of each other along the midline.
Radial Symmetry
A basic body plan in which the organism can be divided into similar halves by passing a plane at any angle along a central axis, characteristic of sessile and bottom-dwelling animals, as the sea anemone and starfish..
Asymmetry
The quality or state of being.
Sponges
Any aquatic, chiefly marine animal of the phylum Porifera, having a porous structure and usually a horny, silliceous or calcareous internal skeleton or framework, occurring in large, sesslie colonies.
Cnidarians
Belonging or pertaining to the cnidaria.
Flatworms
Any worm of the phylum platyhelminthes, having bilateral symmetry and a soft, solid usually flattened body, including the planarians, tapeworms, and trematodes: platyhelminth.
Roundworms
Any nematode, especially Ascaris Lumbricoides, that infests the intestine of humans and other mammals.
Mollusks
A phylum of invertebrates with soft bodies and muscular feet. Some mollusks also have hard shells. Oysters,clams,snails,slugs. octopuses, and squid are mollusks.
Open circulatory system
A circulatory system in which the circulatory fluid is not contained entirely within vessels: a heart pumps fluid through vessels that empty into spaces called sinuses.
closed circulatory system
A circulatory system in which the heart circulates blood through a network of vessels that form a closed loop
Annelid worms
any segmented worm of the phylum Annelida, including the earthworms, leeches, and various marine forms.
Exoskeleton
an external covering or integument, especially when hard, as the shells of crustaceans (opposed to endoskeleton
Compound eye
an arthropod eye subdivided into many individual, light-receptive elements, each including a lens, a transmitting apparatus, and retinal cells.
Antenna
a conductor by which electromagnetic waves are sent out or received, consisting commonly of a wire or set of wires; aerial.
Metamorphosis
a complete change of form, structure, or substance, as transformation by magic or witchcraft.
Endoskeleton
the internal skeleton or framework of the body of an animal (opposed to exoskeleton).
Water vascular system
a system of closed, fluid-filled tubes and ducts of echinoderms used in clinging, locomotion, feeding, and respiration.
