Question

Distinguish between unicellular and multi cellular organisms?

Answer 1

unicellular
 single celled organisms are known as unicellular organisms
multicellular 
 organisms more than one cell are known as multicellular organisms

Answer 2

unicellular organisms : organisms which has a single cell are called unicellular organisms.all the functions of these organisms are performed by this single cell.

multicellular organisms : organisms that are made up of two or more cells are called multicellular organisms.different cells perform different functions of the organism.