Plant tissue culture is a method of asexual reproduction used to produce clones of a plant with desirable traits. plant tissue culture relies on the fact that plant cells have the ability to regenerate a whole plant. single cells are dosed with certain chemicals that trigger dividing cells to produce roots, shoots, and leaves. which tenet of cell theory best serves as a basis for this type of biotechnology? a. all living things are made up of cells. b. all cells come from other cells by cell division. c. all cells are basically the same in chemical composition. d. the cell is the structural and functional unit of all living things.