invertebrate animal Flashcards
Vertebrates
animals with back bones
Invertebrates
animals without back bones
Consumer
an organism that eats other organisms
Ganglion
a mass of nerve cells
gut
the digestive track
Coelom
a body cavity that contains the internal organs
Bilateral Symmetry
two sides of its body mirror each other
Radial Symmetry
its body is organized around the center
Asymmetry
cannot draw a strait line to divide its body into two or more equal parts
Sponges
They are asymmetrical and have no tissue, gut, or neurons
Cnidarians
is a complex animal group
Flatworms
they have bilateral symmetry and are the simplest worms
Roundworms
they are long, round, and slim like spaghetti
Mollusks
is another type of animal group
Open circulatory system
circulatory fluid is not contained entirely within vessels