Distinguish between protostomes and deuterostomes Identify t

Distinguish between protostomes and deuterostomes. Identify the Phyla that belong to each group.

Solution

The maximum off coelomate invertebrates develop as protostomes (\"first mouth\"): in these organism in which the oral end of the animal develops from blastopore. examples flatworms nematodes mollusks , annelids and arthropod ====================================================== In the deuterostomes including Echinodermata and the ancestors of the Chordata, the oral end of the animal develops from a second opening on the dorsal surface of the animal;the blastopore becomes the anus. :examples Chordata Echinodermata (starfish, sea urchins, sea cucumbers, etc.) Hemichordata (acorn worms and graptolites) ================================================================== The Deuterostomes also show indeterminate development, in Deuterostomes ,each of the cells of the eight-cell embryo if separated remain capable of developing as complete organisms, in contrast to determinate development, in which the development fate of each cell in the adult organism has already been determined.