Simple Invertabrate Flashcards
Porifera
pore bearer, includes sponges
Cnidaria
stinging structures in the tentacles surrounding the mouth. hydra, jelly fish
Annelida
various worms or worm like animals characterized by elongated, divided into ring like segments
Hydroid
noting or pertaining to that form of hydrozoan asexual and grows into branching colonies by budding
Jellyfish
free-swimming marine coelenterate that is the sexually reproducing form of a hydrozoan or scyphozoan and has a nearly transparent saucer-shaped body and extensible marginal tentacles studded with stinging cells
Platyhelminthes
worms having bilateral symmetry and a soft, usually flattened body, comprising the flatworms
Nematoda
one of the first animals to have its entire genome sequenced and is important in biological research as a model organism
Pinworms
A small nematoid worm that inhabits the rectum of the human host
Tapeworms
any of a class Cestoda of bilaterally symmetrical flatworms parasitic especially in the intestines of vertebrates called also cestode
Bivavles
having a shell consisting of two halves hinged together., clams, oysters
Gastropods
usually with a univalve shell or none and a distinct head bearing sensory organs
Coelomate
have a fluid filled body cavity called a coelom
Acoelomate
an invertebrate lacking a coelom; especially : one belonging to the group comprising the flatworms and nemerteans and characterized by bilateral symmetry and a digestive cavity that is the only internal cavity
Radial symmetry
around a central axis, as in a starfish or a tulip flower
Asymmetry
The lack or absence of symmetry. Supplement. In biology, the body plan of many organisms exhibit symmetry.