Life Cycle - Organisms (4B)
Post Lab

  • Learning about kingdoms.
  • Comparing characteristics of the 6 kingdoms.
  • animal
  • fungi
  • kingdom
  • monera
  • plant
  • protozoa
  • worksheet
  • scissors

Students discuss how we classify large groups of organisms.


The reasons for grouping organisms into certain kingdoms are not always obvious. The development of the kingdom classification dates back to Aristotle who divided organisms into animals and plants. Today, specialists working with different phyla change classifications when they derive more information. You must realize that we do not know all there is to know about organisms. The 5 kingdom classification system was first derived in the early 1960's, and there are many biologists today that use a 6 kingdom division.

The Monera group is now broken up into 2 other Kingdoms, the Archeabacteria and the Eubacteria. Examples include bacteria or blue-green algae. Monera as a group, have a very simple nucleus and do not have a nuclear membrane. The Kingdom Protista is made up of protozoa, consisting of one celled organisms, that have a well defined nuclear membrane. Protozoa will eat their food and reproduce asexually more commonly than sexually. The Fungi are characterized in that they lack chlorophyll and absorb food from the surrounding ground. Fungi possess organs and reproduce by sexual means (spores). The Plant Kingdom is characterized by its ability to produce by either sexual or asexual means. The animal kingdom is divided into invertebrates and vertebrates. To be an animal requires that an organism eat its food and reproduce mainly by sexual means. Organs are much more developed in the Animal Kingdom than the other kingdoms.

  1. Discuss with students that living organisms are grouped into kingdoms, making it easy for people to discuss the various groupings. Either make a transparency or use the enclosed master as a worksheet to illustrate the common phyla within each kingdom.
  2. You may want to use the following summary:




make their own food, mainly green

 (including Archeobacteria and Eubacteria)

one cell, primitive nucleus


one cell, eat food


absorb food


multicellular, eat food

  1. Give students the worksheet with the different organisms and have them create their own "Tree of Life." Show them the Tree of Life with the pictures on it, to help them recreate their own.

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