Living things are identified and categorised on the basis of their body design in relation to their form and function. So, the classification of life forms is closely related to their evolution ...
Organisms whose cells have a nucleus — eukaryotes — have traditionally been separated into four ‘kingdoms’; now they have been reorganized into six. The authors of the revision hope that it will bring ...
Original classification of living organisms containing four kingdoms (Monera, Protista, Vegetabilia and Animalia), 60 phyla and 253 classes, is presented.