Which among the following does not multiply by fragmentation?
Yeast
The breaking up of a body of a simple multicellular organism into two or more pieces on maturing, each of which grows to form a completely new organism is called fragmentation. Since single-celled organisms have only one cell and cell is the smallest unit of life, they cannot reproduce by fragmentation. The single-celled organism which forms colonies, like Ulothrix, however, can reproduce by fragmentation.