Triploblasty 1227265 198086835 2008-03-14T00:23:33Z 74.71.255.42 '''Triploblasty''' is a condition of the [[blastula]] in which there are three primary [[germ layer]]s: the [[ectoderm]], [[mesoderm]], and [[endoderm]]. Additionally, the term may refer to any ovum in which the [[blastoderm]] splits into three layers. All higher and intermediate animals (from flat worms to humans), arise from a triploblastic ovum. Triploblastic organisms are organisms which evolve from such an ovum. Generally speaking, triploblastic organisms belong to the [[Bilateria]] subregnum. Compare to simpler [[diploblasty|diploblastic]] animals such as [[cnidaria]] with two germ layers and even simpler animals such as [[sea sponge|sponges]] with only one germ layer. {{developmental-biology-stub}} [[Category:Developmental biology]] [[ca:Triploblàstia]] [[es:Triblásticos]] [[fr:Triploblastique]] [[it:Triploblastico]] [[pl:Trójwarstwowce]] [[pt:Triblástico]]