The organisms that have more than one cell in their body are known as multicellular organisms. These organisms may have cell, tissue, organ or organ system levels of the organization.
Various cells of their bodies are structurally modified to perform specific functions and exhibit division of labor. Unlike the unicellular tiny microbes such as bacteria, the multicellular organisms can be seen with unaided eyes.
Multicellular - organisms consisting of more than one, and having differentiated cells that perform specialized functions. Most life that can be seen with the naked eye is this.
