1. The Diversity of Living Things Section 4.3

2. Life is Diverse
Classification- how scientists organize the varieties into categories
3 Million Species have been classified
Millions are still unclassified

3. Six Kingdoms Prokaryotes (Bacteria)
Heterotrophs- eat other organisms to get energy
Photoautotrophs- make energy from light (photosynthesis)
Chemotrophs- make energy from chemical substances like salts
Divided into 2 Kingdoms:
Kingdom Eubacteria- single celled; no nucleus; very common
Kingdom Archaebacteria- single celled; no nucleus; live in harsh environments (hot springs, swamps)

4. 6 Kingdoms Continued… 3. Protista Eukaryotes
Can be either Autotrophs (can make their own food) or Heterotrophs
Most live in water
Mostly unicellular
Diverse
Examples: Paramecium, Amoeba, Euglena, kelp

5. 6 Kingdoms Continued… 4. Fungi Eukaryotes
Strictly Heterotrophic- absorb their food through their body surface
Unicellular or Multicellular
Have cell walls
Most live on land
Examples: mushrooms and yeast

6. 6 Kingdoms Continued 5. Plantae (plants) Eukaryotic
Autotrophic (Heterotrophic- Venus Fly trap**rare)
Multicellular
Examples: grass, trees, daisies, rosebush

7. 6 Kingdoms Continued… 6. Animalia (animals) Eukaryotic Heterotrophs
Multicellular
No cell walls
Bodies are flexible
2 classifications:
Invertebrates
Vertebrates

8. Insects Invertebrates Most abundant animal species on the planet. Why?
a) have a waterproof exoskeleton
b) they move quickly
c) they reproduce quickly
Many fly
Small size allows them to hide from predators and live on very little food

9. Kingdoms of Life