Chapter 17 – Classification of Organisms
Taxonomy – ______________________________________
Why do we need to classify organisms using a universal code? ____________________________________
Carolus Linnaeus - developed the universal system
He also created a system where we place all organisms into a few *large* groups - KINGDOMS - and
then those groups are further divided into smaller groups
Classification of Organisms
The system of naming is called Binomial nomenclature – which means
it is a ______________
How to write the scientific name: 2 rules:
1. _______________________________________
2. _______________________________________
•
Can be abbreviated. Ex. F. leo and F. tigris
Kingdom
Phylum
Class
Order
Family
Genus
Species
Human
Animalia
Chordata
Mammalia
Primate
Hominidae
Homo
Sapien
Lion
Animalia
Chordata
Mammalia
Carnivora
Felidae
Panthera
Leo
Tiger
Animalia
Chordata
Mammalia
Carnivora
Felidae
Panthera
Tigiris
Pintail Duck
Animalia
Chordata
Aves
Anseriformes
Anatidae
Anas
Acouta
Write the scientific names of each organism – follow the rules!
Human:
Lion:
Tiger:
Pintail Duck:
**Check for Understanding**
1.
2.
3.
4.
5.
Which two taxa groups are used for an organism's scientific name? ______________________________
Describe the trend in the levels (taxas) as you move down from kingdom to species. ________________
Which taxa level has the MOST members? ______________
Which taxa level has the MOST characteristics? ___________
Which of the following pairs is MOST closely related? (circle)
Acer rubrum & Acer saccharum
Acer rubrum & Chenopodium rubrum
The Kingdoms
Recently, scientists have added a group above Kingdom. Three groups, called DOMAINS, contain each of the six
kingdoms.
•
Domain Eukarya - includes organisms composed of ____________ cells (plants, animals, fungi, protists)
•
Domain Bacteria - includes all ______________ cells, Kingdom Eubacteria
•
Domain Archaea - includes only ___________ bacteria, Archaebacteria
There are currently 6 kingdoms – all organisms can be placed into one of those 6.
Classification into a kingdom is based on certain criteria:
Number of cells – __________________
Type of cell - _____________________
_________
Cell Wall makeup - __________________________________How it obtains energy - _____________________