Totipotent stem cells (e.g., zygote) can give rise to all cell types.
Pluripotent stem cells (e.g., inner cell mass of blastocyst) can form almost any cell but not placenta.
Multipotent stem cells (e.g., haemopoietic stem cells) can form multiple types of cells within a specific tissue.
Unipotent cells (e.g., basophil progenitor cells) can only develop into one cell type.