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
the property of being divisible into symmetrical halves on either side of a unique plane
Bilateral symmetry
a slender flexible limb or appendage in an animal
Tentacle
is an explosive cell containing one giant secretory organelle or cnida
Cnidocyte
the outermost layer of cells or tissue of an embryo in early developmen
ectoderm
the innermost layer of cells or tissue of an embryo in early developmen
endoderm
part of the female reproductive system.
ovary
the witnessing or concluding clause of an instrumen
teste
