biology invertebrate Flashcards
Porifera
organisms known as sponges
Cnidaria
aquatic invertebrate animal
Annelida
worms or worm like animals
Hydroid
coelenterate of an order that includes the hydras
Jellyfish
free-swimming marine coelenterate with a jellylike bell- or saucer-shaped body that is typically transparent and has stinging tentacles around the edge.
Platyhelminthes
The flatworms, flat worms
Nematoda
A large phylum of worms with slender, unsegmented, cylindrical bodies, including the roundworms, threadworms, and eelworms. They are found abundantly in soil and water, and many are parasites.
Pinworms
small nematode worm that is an internal parasite of vertebrates
Tapeworms
parasitic flatworm, the adult of which lives in the intestine of humans and other vertebrates. It has a long ribbonlike body with many segments that can become independent, and a small head bearing hooks and suckers.
Bivalves
quatic mollusk that has a compressed body enclosed within a hinged shell, such as oysters, clams, mussels, and scallops.
Gastropods
mollusk of the large class Gastropoda, such as a snail, slug, or whelk.
Coelomate
main body cavity in most multicellular animals and is positioned inside the body to surround and contain the digestive tract and other organs
Acoelomate
nvertebrate lacking a coelom
Radial Symmetry
symmetry around a central axis, as in a starfish or a tulip flower.
Asymmetry
lack of symmetry.
