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22 Cards in this Set

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  • Back
Invertebrates
Animals without backbone
vertebrates
Animals with backbone
Sherical symmetry
cut into identical halves by any cut through its center
Radial symmetry
cut into two identical halves by any longitudinal cut through it's center
Bilateral symmetry
cut into two identical halves by a single longitude cut alog its center with divides into right and left halves
Epidermis
An outer layer of cells designed to provide protection
Mesenchyme
separates the epidermis from the inner cells in a spounge
Epithelium
Animal tissue consisting of one or more layers of cells
Anterior end
an animal that contains in head
Posterior end
an animal that contains in the tail
Circulatory system
a system designed to trasport food throughout a creatures body
Nervous system
a system of sensitive cells that respond to simuli
ganglia
masses of nerve cell bodies
Hermaphroditic
Possessing both the male and the female repodution organs
Regeneration
the ability to regrow a missing body part
mantel
makes the mollusk's shell, and performs respiration
Shell
multilayered stucture secreted by the mantle
Visceral hump
a hump that contains a heart, digestive, and excretory organs
foot
a muscular organs that is used for locamotion
Radula
An organ covered with teeth that are use to scrape food into their mouths
Univalve
An organism with a single shell
Bivalve
An organism with two shells