Classification Flashcards
(19 cards)
What is classification in biology?
Organising Living Organisms into Groups
How were organisms traditionally classified?
According to similarities and differences in their observable characteristics
What did the classification include as technology improved?
Cell structure visible with a microscope
What are the five kingdoms in the classification system?
- Animals
- Plants
- Fungi
- Prokaryotes
- Protists
What is the first kingdom of the five kingdom classification system?
Animals
What does the kingdom Fungi include?
Mushrooms, toadstools, yeasts, and mould
What characterizes Prokaryotes?
Single-celled organisms without a nucleus
What are Protists?
Eukaryotic single-celled organisms, e.g., algae
What are the levels of classification from kingdom to species?
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
Is the five kingdom classification system still current?
No, it is now a bit out of date
What advancements have changed classification systems over time?
Developments in technology, biochemical processes, and genetics
Who proposed the three domain system of classification?
Carl Woese
What did Woese discover about Prokaryotes?
Some members were not as closely related as first thought
What are the three domains proposed by Woese?
- Archaea
- Bacteria
- Eukarya
What characterizes the domain Archaea?
Organisms that look similar to bacteria but are genetically different
Where were Archaea first found?
Extreme places such as hot springs and salt lakes
What does the domain Bacteria include?
True bacteria like E. coli and Staphylococcus
What organisms are included in the domain Eukarya?
Fungi, plants, animals, and protists
How are the three domains further classified?
Using the smaller groups from the five kingdom system, beginning with kingdom and finishing with species
