<prompt> Sacro - coccygeal teratoma tumour cells consists of Cells ofEctodermEndodermMesodermAll of the above  <response>: Sacro - coccygeal teratoma arises from totipotent Cells from node of Hensen. Hence it is composed of all 3 germ Cells i.e , Ectoderm, Endoderm , Mesoderm. 