invertebrate Flashcards
(23 cards)
An animal with a backbone
Vertebrates
An animal without a backbone
Invertebrates
an organism that eats other organisms or organic matter
Consumer
a mass of nerve cells
Ganglion
a digestive tract
Gut
body cavity that contains internal organs
Coelom
most complex animals that the two sides of its body mirror each other
Bilateral Symmetry
body is organized around the center
Radial Symmetry
body is not organized around a center
Asymmetry
an asymmetrical animal
Sponges
invertebrates that have stinging cells
Cnidarians
the simplest worms
Flatworms
tiny worms that break down dead plants and animals / can be parasites
Roundworms
invertebrates that mostly live in water some live on land
Mollusks
a circulatory system in which the circulatory fluid is not contained entirely within vessels
Open circulatory system
a circulatory system in which the heart circulates blood through a network of blood vessels that form a closed loop
Closed circulatory system
a segmented worm
Annelid worms
a hard external supporting structure
Exoskeleton
an eye composed of many light detectors
Compound eye
a feeler that sences touch taste and smell
Antenna
a phase in the life cycle
Metamorphosis
an internal skeleton made of bone or cartilage.
Endoskeleton
a system of canals that has water flow through the body
Water vascular system
