invertebrate vocab Flashcards
pore bearer, a phylum that includes the organisms known as sponges. Sponges consist of a jelly-like substance between two layers of cells and are found in freshwater and marine habitats.
Porifera
an aquatic invertebrate animal of the phylum Cnidarian, which comprises the coelenterates. jellyfish, hydra, sea anemone, and coral.
Cnidaria
arious worms or wormlike animals of the phylum Annelida, elongated, cylindrical body divided into ringlike segments. Most annelids have movable bristles called setae, and include earthworms, leeches, and polychetes
Annelida
coelenterate of an order that includes the hydras
hydroid
free-swimming marine coelenterate with a jellylike bell- or saucer-shaped body that is typically transparent and has stinging tentacles around the edge
jellyfish
phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrate, flat worms
Platyhelminthes
phylum of worms with slender, unsegmented, cylindrical bodies, including the roundworms, threadworms, and eelworms, mostly found in the ground
Nematoda
a small nematode worm that is an internal parasite of vertebrates.
Pinworms
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.
Tapeworms
aquatic mollusk that has a compressed body enclosed within a hinged shell, such as oysters, clams, mussels, and scallops.
Bivalves
mollusk of the large class Gastropoda, such as a snail, slug, or whelk.
Gastropods
main body cavity in most multicellular animals and is positioned inside the body to surround and contain the digestive tract and other organs. has a fluid cavity
Coelomates
invertebrate lacking a coelom, solid and no fluid cavity
Acoelomates
symmetry that a jellyfish has
Radial Symmetry
Symmetry that a sponge has
Asymmetry
