Table of Contents
Five Kingdom Classification System
In the previous segment of the chapter ‘Diversity in Living Organisms’, we got introduced to the biological classification. In this segment, let us understand the five kingdom classification system.
| S.NO | CONTENT |
| 1 | FIVE KINGDOM CLASSIFICATION SYSTEM |
| 2 | SUMMARY |
| 3 | WHAT’S NEXT? |
What is the Five kingdom classification system?
R. H. Whittaker put forth the five kingdom classification system which helped classify various organisms easily. The five kingdoms were:
Kingdom Monera
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- This kingdom harbours a variety of microorganisms which belong to the prokaryotic category.
- Cells, in this kingdom, do not have a well-defined membrane system and lack a proper nucleus and membrane-bound organelles.
- The genetic material in these organisms is scattered throughout the cytoplasm and is called the Nucleoid. The other organelles are also scattered throughout the cytoplasm.
- Subtypes of this kingdom include archaebacteria and eubacteria.
- Archaea are the most primitive forms found even in extreme environmental conditions like hot springs and the Dead Sea.
- Eubacteria are the true forms of bacteria that are present everywhere around us. These are the beneficial ones as well as the harmful parasitic ones.
- So, all the bacteria, in general, are included in this kingdom.
Prokaryotic Cell Archaebacteria Eubacteria
Kingdom Protista
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- This kingdom contains organisms which are unicellular and eukaryotic.
For more visit: Five Kingdoms Classification – Features, Types and Examples and FAQs
