From inner to outer, the germ cell layers are the endoderm, mesoderm, and ectoderm.Each of the three layers develops into a different part of the embryo: the endoderm into the respiratory, auditory,...
Ectoderm, endoderm and mesoderm
The three germ layers are the ectoderm, the mesoderm, and the endoderm.
the three germ layers on a squid are the ectoderm, endoderm and mesoderm
to protect it's soft and delicate body.