Question

what is advantages of multicellularity &uncellularity

Answer 1

   Unicellular Organisms
1. Body organization is simple.
2.Has good capacity of regeneration and power of division. 
3.There is no cell differentiation process. Injury or death of some cells does not affect the organisms, the affected cells are replaced.

 Multicellular Organisms
1.Specialized functions are performed by different cells, tissues, organs or organ systems.
2.Organisms have a longer lifespan.
3. Injury or death of some cells does not affect the organisms, the affected cells are replaced.