Classification

Sorting living things in groups based on characterstics.

• The study of the principles of classification.
• Studying the differences between species.
• E.g. physical features can be used to group species.

[image]This shows how all these animals have evolved from a common ancestor, archosaurs.

Phy[image]logeny

• Study of evolutionary relations between species.
• The more closely related the species, the more recent the common ancestor and the more

Prokaryotes- bacteria, no division of labour, no membrane bound organelles.

Protoctists- Eukaryotic, mostly single celled, don't fit into other groups

Fungi- Multicellular with fused cells. Hyphae. Hetrotrophe 

Plants- Eukaryotic, autotrophes. Multicellular, don't move.

Animalia- Hetrotrophic, multicellular, move.  

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species

Old

Live and move on land

Live and move on water

Move through the air

Woese's three domain system

Bacteria

Archaebacteria

Eukaryotae