Are Platyhelminthes Diploblastic or Triploblastic?

The simplest animals that are bilaterally symmetrical and triploblastic (composed of three fundamental cell layers) are the Platyhelminthes, the flatworms.

Are Platyhelminthes diploblastic?

Platyhelminthes is commonly known as flatworm or tapeworm. Gegenberg gave the term Platyhelminthes. They are advanced diploblastic or lower triploblastic, acoelomate and bilaterally symmetrical metazoan.

Are all flatworms diploblastic?

Flatworms are considered to be triploblasts because their organs develop from three germ layers: ectoderm, mesoderm, and endoderm. This contrasts with diploblasts such as cnidarians that develop from only two germ layers: ectoderm and endoderm.