How many germ layers are present in the embryonic stage of Platyhelminthes?
The correct option is
C
Three
A germ layer is a group of cells in an embryo that interacts with each other. These layers develop in embryonic life, through the process of gastrulation. In Platyhelminthes, there are three germ layers which are the outer ectoderm, the middle mesoderm, and the inner endoderm.