Whittaker's Five Kingdom Classification — NEET Biology
✅ Asked in NEET 2026R.H. Whittaker (1969) proposed a Five Kingdom Classification. The kingdoms defined by him were named Monera, Protista, Fungi, Plantae and Animalia. The main criteria for classification used by him include cell structure, body organisation, mode of nutrition, reproduction and phylogenetic relationships. Table 2.1 gives a comparative account of different characteristics of the five kingdoms.
Whittaker's 1969 classification system divides all organisms into Monera, Protista, Fungi, Plantae, and Animalia based on cell structure, body organization, nutrition mode, reproduction, and evolutionary relationships. Students often confuse this with older 2-kingdom or 3-kingdom systems, or mix up the defining characteristics of each kingdom—especially where Protista and Fungi differ. The key to NEET success is remembering that Fungi are eukaryotic and heterotrophic (absorptive nutrition), while Plantae are eukaryotic and autotrophic. Practice identifying organisms by their classification criteria rather than just memorizing kingdom names to avoid typical mistakes on comparison-based questions.
The main criteria for Whittaker's Five Kingdom Classification (1969) included: A. Cell structure; B. Body organization; C. Presence of flagellum; D. Reproduction; E. Phylogenetic relationships.
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