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Ch. 25 Vocab

Bio/Chemistry

TermDefinition
blastula cell covered, fluid filled ball
deuterostome animals mouth isn't developed from opening but from cells
ectoderm layer of cell on outer surface of gastrula
endoderm layer of cell lining the inner surface
gastrula cells on one side of the blastula then move inward
mesoderm third cell layer found in the developing embryo
protostome opening in the gastrula develops into the mouth
sessile organisms that are permanently attached to a surface
acoelomate animals that develop from three cell layer but have no body cavities
anterior head end
bilateral symmetry can be divided down its length into right and left halves
coelom fluid filled space that is completely surrounded by mesoderm
dorsal upper surface
endoskeleton inside of body
exoskeleton outside of body
invertebrate does not have a vertebrate
posterior tail end
pseudocoelom a fluid filled body cavity partly lined with mesoderm
radial symmetry can be divided along any plane
symmetry a term that describes the arrangement of body structures
ventral lower surface
vertebrate someone or thing that has a vertebrate
Created by: LoganBender
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