| Scientist |
Pattern of classification |
| 1. Carl Linnaeus |
(a) 5 groups of living organisms |
| 2. Haeckel |
(b) 2 groups as Prokaryotes and Eukaryotes |
| 3. Chatton |
(c) 4 groups as Monera, Protista, Plants and Animals |
| 4. Kopland |
(d) 3 kingdoms – Protista, Plants and Animals. |
| 5. Whittaker |
(e) 2 kingdoms of living organisms |