What are the five kingdoms in Whittaker’s classification, and what criteria are used?
R.H. Whittaker’s five-kingdom classification includes Monera, Protista, Fungi, Plantae, and Animalia. The main criteria for this classification are cell structure (prokaryotic or eukaryotic), body organisation (unicellular or multicellular), mode of nutrition (autotrophic or heterotrophic), reproduction, and phylogenetic relationships.