Invertebrate Animals 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 track.
Coelom
A body cavity that contains the internal organs.
Bilateral Symmetry
The two sides of its body mirror each other.
Radial Symmetry
Its body is organized around the center, like the spokes on a wheel.
Asymmetry
Its body is not organized around the center.
Sponges
They are multi-cellular organisms that have bodies full of pores and channels allowing water to circulate through them.
Cnidarians
Some kind of animal tat lives in the sea.
Flatworms
The flat worms, are a phylum of relatively simple bilateral, unsegmented, soft-bodied invertebrates.
Roundworms
The nematodes constitute the phylum Nematode. They are a diverse animal phylum inhabiting a broad range of environments.
Mollusks
Mollusca are the second largest phylum of invertebrate animals. The members are known as mollusks or mollusks.
Open circulatory system?
Open circulatory systems (evolved in crustaceans, insects, mollusks and other invertebrates) pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood.