Domains of life.
All living things are classified into 3 large domains.
Domains Bacteria and Archaea are unicellular prokaryotes and possess no nucleus.
Each of these two domains may comprise several kingdoms.
Domain Eukarya is split into 4 kingdoms of organisms with a nucleus.
- Protista contains both unicellular and multicellular organisms.
- Plantae are multicellular, photosynthetic, terrestrial organisms.
- Fungi are multicellular and digest food externally.
- Animalia are multicellular and digest food internally.