6.4 - Classification

What are the classes of organisms as determined by Carl Linnaeus?

Kingdom, phylum, class, order, family, genus, species

Which features are living creatures traditionally classified by?

By their structure and characteristics.

What is the binomial system of naming organisms?

Genus name followed by species name.

Why were new classification models proposed?

• Developments in microscopy allowed better examination of internal structures.

• Improvement in understanding of biochemical processes.

State the three domains.

• Archaea

• Eukarya

• Bacteria

Which organisms belong in the domain Archaea?

Bacteria, usually living in extreme environments.

Which organisms belong in the domain Bacteria?

bacteria

Which kingdoms belong in domain Eukarya?

• Plants

• Animals

• Fungi

• Protists

How are evolutionary trees created?

By examining the DNA of different species and analyzing how similar the sequences are.