<Tr> <Td> </Td> <Td> <P> Kingdom Plantae </P> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Kingdom Animalia </P> </Td> </Tr> <P> The differences between fungi and other organisms regarded as plants had long been recognised by some; Haeckel had moved the fungi out of Plantae into Protista after his original classification, but was largely ignored in this separation by scientists of his time . Robert Whittaker recognized an additional kingdom for the Fungi . The resulting five - kingdom system, proposed in 1969 by Whittaker, has become a popular standard and with some refinement is still used in many works and forms the basis for new multi-kingdom systems . It is based mainly upon differences in nutrition; his Plantae were mostly multicellular autotrophs, his Animalia multicellular heterotrophs, and his Fungi multicellular saprotrophs . The remaining two kingdoms, Protista and Monera, included unicellular and simple cellular colonies . The five kingdom system may be combined with the two empire system: </P> <Table> <Tr> <Td> Life </Td> <Td> <Table> <Tr> <Td> Empire Prokaryota </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Kingdom Monera </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Empire Eukaryota </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Kingdom Fungi </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Kingdom Protista </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Kingdom Plantae </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Kingdom Animalia </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table>

Who introduced the five kingdom system of classification