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Animal Diversity 4-5

TC3 Biol 105 diversity videos 4-5

TermDefinition
Cephalochordata Lancelet, marine animals that possess a segmented and elongated body, also contain a notochord that extends from the head to the tail
Urochordata a group of chordate animals that comprises the tunicates (name means tail cords)
Petromyzontidae lampreys (jawless vertebrate)
Chondrichthyes class of jawed fish that contains the cartilaginous fish
Osteichthyes The bony fish, mineralized skeletons
Chordates animals with dorsal nerve cord, but not necessarily a vertebral column. Also has pharyngeal slits and a tail at some point in their development
vertebrate animals with dorsal nerve cord and a backbone.
Metamorphosis this is the process that insects and amphibians go through to transform from an immature form to an adult.
Hexapoda general terms for an organism with six feet
Synaphmoprhy trait(s) that set one group of animals apart from it’s ancestors and from other groups that came from the same ancestor
Myriapoda generic term for an organism with many feet (more than 6 or 8)
Arthropod animal with “jointed feet”
Annelid the first segmented animals
Segmentation repetition of anatomically identical units that can be added to and modified to serve different purposes
Polychaetes diverse bristled worms
Crustacean aquatic arthropods (ie. crabs)
Relative complexity compared by looking at number of germ layers and body cavity/coelom
Exoskeleton hard outer shell made of chitin
Cephalothorax head and thorax are combined (cemented together)
Created by: PRO Teacher etucci
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