Five kingdom classification was proposed by_____________?

Explanation

Robert Whittaker proposed the five-kingdom classification in 1969, separating organisms according to cell type, body organisation and mode of nutrition. Linnaeus developed an earlier hierarchical system, while Chatton introduced the prokaryote-eukaryote distinction. Students may choose Margulis and Schwartz because they later modified and developed kingdom classifications, but they did not originate Whittaker's five-kingdom system.