Name the scientists who gave 2-kingdom and 5-kingdom classification, respectively.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Two-Kingdom Classification: Proposed by Carolus Linnaeus in the 18th century, dividing all life into:
- Kingdom Plantae (plants)
- Kingdom Animalia (animals)
This simple system became inadequate as microscopy revealed organisms that didn't fit neatly into either category.
Five-Kingdom Classification: Proposed by Robert H. Whittaker in 1969, recognizing:
- Monera (prokaryotic organisms: bacteria)
- Protista (unicellular eukaryotes)
- Fungi (heterotrophic decomposers)
- Plantae (multicellular autotrophs)
- Animalia (multicellular heterotrophs)
Whittaker's system considered cell structure, body organization, mode of nutrition, and ecological roles. Modern classification has evolved further with molecular phylogenetics, leading to the three-domain system (Bacteria, Archaea, Eukarya) proposed by Carl Woese.
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