… The main difference between protostomes and deuterostomes is that the blastopore in protostomes are developed into a mouth while the blastopore in deuterostomes is developed into an anal opening. Protostomes are primitive invertebrates while deuterostomes include chordates and echinoderms. What is difference between Protostome and Deuterostome development? These tissue layers are the endoderm (endo-, -derm) or innermost layer, mesoderm (meso-, -derm) or middle layer, and the ectoderm (ecto-, -derm) or outer layer. Do Acoelomates have a mesoderm?Īcoelomates have a triploblastic body plan, meaning that their tissues and organs develop from three primary embryonic cell (germ cell) layers. Which has mesoderm but no coelom?Ī) Fasciola → as it belongs to phylum Platyhelminthes which are triploblastic but have no coelom. Rather the cells role in the body of an adult will be determined at a later time, usually though stem cells. … These cells fate and role are also indeterminate. Protostomes exhibit spiral clevage in their cells, since each layer is offest slightly. This pore deepens, forming the gut and eventually the anus. Do protostomes have indeterminate cell fate?
In deuterostomes, the blastopore transforms into an anus, and another cavity on the opposite side creates a mouth. What happens to the blastopore during Deuterostome development?
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