Which Kingdom classification group unicellular and multicellular organisms together?

Step-by-step solution

Earlierclassification systems included bacteria, blue green algae, fungi, mosses,ferns, gymnosperms and the angiosperms under ‘Plants’. The characterthat unified this whole kingdom was that all the organisms included had acell wall in their cells. This placed together groups which widely differed inother characteristics. It brought together the prokaryotic bacteria and theblue green algae ( cyanobacteria) with other groups which were eukaryotic. It also grouped together the unicellular organisms and the multicellul