B6- Classification Flashcards
What is classification in biology?
Organising Living Organisms into Groups
Who proposed the traditional classification system?
Carl Linnaeus
What is the first level of classification in the Linnaean system?
Kingdom
List the hierarchical levels of the Linnaean classification system.
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
What significant development in classification was proposed by Carl Woese in 1990?
The three-domain system
What are the three domains in the three-domain system?
- Archaea
- Bacteria
- Eukaryota
What type of organisms are found in the Archaea domain?
Primitive bacteria often found in extreme places
Which domain contains true bacteria like E. coli?
Bacteria
What does the Eukaryota domain include?
- Fungi
- Plants
- Animals
- Protists
What is the binomial system of naming organisms?
Every organism is given its own two-part Latin name
What does the first part of a binomial name refer to?
The genus
What does the second part of a binomial name refer to?
The species
What is the binomial name for humans?
Homo sapiens
True or False: The binomial system is used worldwide.
True
What do evolutionary trees show?
How different species are related to each other
What do evolutionary trees indicate about common ancestors?
The more recent the common ancestor, the more closely related the two species
What types of data do scientists use to analyse evolutionary relationships in living organisms?
Current classification data, such as DNA analysis and structural similarities
What information do scientists use to analyse evolutionary relationships in extinct species?
Fossil record
Which two species are closely related due to a recent common ancestor?
Whales and dolphins
Fill in the blank: Whales and dolphins are more distantly related to _______.
Sharks
