Answer:
Protostomes: Protostomes may be defined as the organisms in which mouth develops first from the blastopore. These organisms shows the determinate and spiral cleavage. The coelum may be defined as the solid mass of the cell that are derived from the mesoderm.'
Deuterostomes: Deuterostomes may be defined as the organisms in which naus develop first from the blastopore. These organisms show indeterminate cleavage and coelum is derived from the archenteron.
Triploblast : Both protostomes and deuterostomes are triploblastic animals,
None of them is diploblastic in nature.