A: the graphic shows a a six-kingdom model published by thomas cavalier-smith in 1998, which has since been revised to a seven kingdom system. some of the changes made by cavalier-smith were due to advances in the electron microscope that allowed for the discovery that some chloroplasts were found in the endoplasmic reticulum rather than the cytoplasm. each statement suggests a way the 6-kingdom system by cavalier-smith differs from the kingdom system, except: a) cavalier-smith's model adds the kingdom chromista. b) cavalier-smith's model no longer separates prokaryotes and eukaryotes. c) cavalier-smith's model combines archaebacteria and eubacteria into one kingdom, bacteria. d) cavalier-smith's model reorganizes eukaryotes into five kingdoms instead of the 4 commonly accepted.