multicellular means to have more than one cell. For example, we are multicellular, but on the other hand if something only has one cell, then it is considered unicellular
The differentiation of the cells. Cells in plants are doing many types of jobs, while cells in protists are basically all the same.
Yes, mold is multi cellular. They also live in colony.
Yes.
Multicellular makeup means animals are made of many cells animals cells are eukaryotice which means there cells contain nucleus