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Chapter 25 - Vocab.

TermDefinition
blastula hollow ball of cells in a layer surrounding a fluid-filled space
deuterostome animal whose mouth develops from cells other than those at the opening of the gastrula
ectoderm layer of cells on the outer surface of the gastrula
endoderm layer of cells on the inner surface of the gastrula
gastrula animal embryo development stage where cells on one side of the blastula move inward forming a cavity of two or three layers of cells with an opening at one end
mesoderm
protostome
sessile
acoelomate
anterior
bilateral symmetry
coelom
dorsal
endoskeleton
exoskeleton
invertebre
posterior
pseudocoelom
radial symmetry
symmetry
ventral
vertebrate
Created by: zacharyw1114
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