Simple invertebrets Flashcards
multicellular organisms that have bodies full of pores and channels allowing water to circulate through them
Porifera
a phylum containing over 10,000 species of animals found exclusively in aquatic environments
Cniadiran
a large phylum, with over 17,000 extant species including ragworms, earthworms, and leeches
Annelida
a coelenterate of an order that includes the hydra
Hydroid
are softbodied free-swimming aquatic animals with a gelatinous umbrella-shaped bell and trailing tentacles
Jellyfish
a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
platyhelminthes
constitute the phylum Nematoda
Nematoda
a small nematode worm that is an internal parasite of vertebrates.
Pinworm
a parasitic flatworm
Tapeworm
a class of marine and freshwater mollusks that have laterally compressed bodies enclosed by a shell consisting of two hinged parts.
Bivalves
snails and slugs, are a large taxonomic class within the phylum Moluccas.
Gastropods
have a fluid filled body cavity called a coelom
Coelomate
an invertebrate lacking a coelom
Acoelomate
symmetry around a central axis
Radial symmetry
lack of equality or equivalence between parts or aspects of something
Assymetry
