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.
