Hierarchical Taxonomic System of Species

• The current taxonomic law has 8 levels in its hierarchy:

  1. domain
  2. kingdom
  3. phylum
  4. class
  5. order
  6. family
  7. genus
  8. species
• Taxonomy (which literally means "arrangement law") is the science of classifying organisms to construct internationally shared classification systems with each organism placed into more and more inclusive groupings
• This organization from larger to smaller, more specific categories, is called a hierarchical system
• Taxonomic hierarchy is the process of arranging various organisms into a succesive levels of the biological classification
• Carollus Linnaeus (May 23, 1707-January 10, 1778) also known as Carl von Linne, father of modern taxonomy and ecology. He was a Swedish naturalist and explorer who was the 1st to fame principles for defining natural genera
• The portion of Earth called biosphere holds the numerous varieties of organisms that dwell in water, land, and air.
• Organisms are ordered in six different kingdoms namely:

  1. Kingdom Archaea,
  2. Kingdom Eubacteria
  3. Kingdom Protista
  4. Kingdom Fungae
  5. Kingdom Plantae
  6. Kingdom Animalia
• Bacteria are unicellular organisms, and they exist in a group called clusters
• Bacteria that decompose dead organisms are called bacteria of decay or decomposers
• Bacteria that causes diseases are known as pathogenic bacteria
• Pathogenic microorganisms are the diseases that causes microorganisms
• 3 major shapes of bacteria:

  1. Coccus (round or spherical)
  2. Bacillus (rod-shaped)
  3. Spirillum-shaped bacteria (spiral)