Page 1 - 2.Lesson notes-The Hierarchy of Classification
P. 1

SAI International School
                                            Subject- Biology, Class-IX
                                   Chapter- Diversity in living organisms
                                       Subtopic- The Hierarchy of Classification
                                                      Module-24
                                                   Lesson Notes

               The Hierarchy of Classification:
                   •  Ernst Haeckel (1894), Robert Whittaker (1959) and Carl Woese (1977)
                       classified organisms into kingdoms.
                   •  Whittaker divided them into 5 kingdoms, Monera, Protista, Fungi, Plantae and
                       Animalia on the basis of their cell structure, mode and source of nutrition and
                       body organisation.

                   •  Various levels of classification are –


                   •  Kingdom ->Phylum (animals)/ Division (plants) —>Class  -> Order -> Family->
                       Genus  -> Species.



                                         The Five kingdom classification






























               Kingdom 1: Monera

               Following are its basic features:

                   •  Prokaryotic, Unicellular.

                   •  Can be autotrophic or heterotrophic.
                   •  May or may not have cell wall.

                   •  Examples-  Anabaena  and  Bacteria  (heterotrophic),  Cyano-bacteria  or  Blue
                       green algae (autotrophic), Mycoplasma
   1   2   3   4