flashcards
an animal that has a backbone
Vertebrates
an animal that does not have a backbone
Invertebrates
an organism that eats other organisms or organtic
matter
Consumer
a mass of nerve cells
Ganglion
the gigestive tract
Gut
a body cavity that contins internal organs
Coelom
the property of being divisible into symmetrical halves on either side of a unique plane.
Bilateral Symmetry
symmetry around a central axis, as in a starfish or a tulip flower.
Radial Symmetry
lack of equality or equivalence between parts or aspects of something; lack of symmetry.
Asymmetry
are the basalmost clade of animals of the phylum Porifera (/pɒˈrɪfərə/; meaning “pore bearer”. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells.
Sponges
any invertebrate animal, as a hydra, jellyfish, sea anemone, or coral, considered as belonging to the phylum Cnidaria, characterized by the specialized stinging structures in the tentacles surrounding the mouth; a coelenterate. adjective. 2. belonging or pertaining to the Cnidaria. Origin of cnidarian Expand.
Cnidarians
any parasitic or free-living invertebrate of the phylum Platyhelminthes, including planarians, flukes, and tapeworms, having a flattened body with no circulatory system and only one opening to the intestine. flatworm in Medicine Expand. flatworm flat·worm
Flatworms
constitute the phylum Nematoda
Roundworms
The molluscs compose the large phylum of invertebrate animals known as the Mollusca
Mollusks
a circlatory system in wich the circlutory fliud is not contained entirly within vessals
Open circulatory system
a circulatory system which the heart circluates blood through a network of vessals that for a closed loop
Closed circulatory system
are a large phylum, with over 17,000 extant species including ragworms, earthworms, and leeches.
Annelid worms
a hard, external, structure
Exoskeleton
an eye commposed of many light detctors
Compound eye
a feeler that that is on the head of an interaterb such as a crustacean or an an incect and that sences touch taste or smell
Antenna
a phse in the life cycle of many animals during which a rapid change from immature from an organism to the audulte form
Metamorphosis
an enternal skeleton made of bones and cartlige
Endoskeleton
a system of canalsfilled with a wartry fluid that circlrates throaght the body of an echoderm
Water vascular system
