invertebrate Flashcards
(23 cards)
Vertebrates
an animal that has a backbone
Invertebrates
an animal that does not have a backbone
Consumer
an organism that eats other organisms
Ganglion
a mass of nerve cells
Gut
the digestive tract
Coelom
a body cavity that contains the internal organs
Bilateral Symmetry
the two sides of the animal’s body mirror each other
Radial Symmetry
body is organized around the center
Asymmetry
its body is not organized around a ceater
Sponges
Sponges are the basalmost clade of animals of the phylum Porifera
Cnidarians
Cnidaria is a phylum containing over 10,000 species of animals found exclusively in aquatic environments
Flatworms
a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
Roundworms
constitute the phylum Nematoda.
Mollusks
Mollusks are the largest marine phylum, comprising about 23% of all the named marine organisms.
Open circulatory system
invertebrates, have a open circulatory system.
Closed circulatory system
Vertebrates have closed circulatory system
Annelid worms
ragworms, earthworms, and leeches.
Exoskeleton
In usage, some of the larger kinds of exoskeletons are known as “shells”.
Compound eye
as found in insects and crustaceans.
Antenna
ants and bugs have these
Metamorphosis
a caterpillar into a butterfly and, in amphibians, the changing of a tadpole into a frog.
Endoskeleton
an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.
Water vascular system
hydraulic system used by echinoderms, such as sea stars and sea urchins,
