|Class 9 Biology Diversity In Living Organisms||The Hierarchy of Classification-Groups|
The Hierarchy of Classification-Groups
Ernst Haeckel (1894), Robert Whittaker (1959) and Carl Woese (1977) classified the organisms into wider classes called kingdoms.
Robert Whittaker used the following points to categorize the organisms:
All living organisms were broadly categorized into following 5 categories called kingdoms:
The structure of a kingdom is as follows: