What distinguishes SOMATIC-, GERM- and STEM-cells? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a GERM-cells constantly multiply and differentiate; SOMATIC-cells are involved in reproduction and STEM-cells are terminally differentiated. b GERM-cells are terminally differentiated; SOMATIC-cells constantly multiply and differentiate and STEM-cells are terminally differentiated. c GERM cells are involved in reproduction; SOMATIC cells are terminally differentiated and STEM cells constantly multiply and differentiate. d none of the above.