1. Biological Diversity on the Planet How many different types of organisms are on Earth?

2. Biological Diversity Refers to all of the different types of organisms on earth Refers to all of the different types of organisms on earth Organisms can live on land (terrestrial), in water (aquatic) or underground (subterranean) Organisms can live on land (terrestrial), in water (aquatic) or underground (subterranean)

3. What is a species? Group of organisms with the same structures and can reproduce with each other Group of organisms with the same structures and can reproduce with each other Scientists estimate there are between 30 and 100 million different species living today Scientists estimate there are between 30 and 100 million different species living today However, scientists have only described just over 1.7 million different species However, scientists have only described just over 1.7 million different species

4. Insects, Centipedes and Millipedes 963 000 different species (55.8% of the world’s total number of species) 963 000 different species (55.8% of the world’s total number of species) Includes mosquitoes, beetles, flies, ants, etc. Includes mosquitoes, beetles, flies, ants, etc.

5. Plants 270 000 different species (15.6% of the world’s total number of species) 270 000 different species (15.6% of the world’s total number of species) Includes all plants, trees, ferns, flowers, etc. Includes all plants, trees, ferns, flowers, etc.

6. Fungi and Lichens 100 000 different species (5.79% of the world’s total number of species) 100 000 different species (5.79% of the world’s total number of species) Includes mushrooms, lichens (fungi and algae combined) and others Includes mushrooms, lichens (fungi and algae combined) and others

7. Protozoans and Algae 80 000 different species (4.63% of the world’s total number of species) 80 000 different species (4.63% of the world’s total number of species) Includes amoeba, paramecium, euglena and all types of algae Includes amoeba, paramecium, euglena and all types of algae

8. Spiders and Scorpions 75 000 different species (4.35% of the world’s total number of species) 75 000 different species (4.35% of the world’s total number of species) Includes all spiders, tarantulas, and scorpions Includes all spiders, tarantulas, and scorpions

9. Mollusks 70 000 different species (4.06% of the world’s total number of species) 70 000 different species (4.06% of the world’s total number of species) Snails, slugs, clams, oysters, mussels, scallops, squid, octopi etc. Snails, slugs, clams, oysters, mussels, scallops, squid, octopi etc.

10. Crustaceans 40 000 different species (2.32% of the world’s total number of species) 40 000 different species (2.32% of the world’s total number of species) Includes shrimp, lobsters, crabs, etc. Includes shrimp, lobsters, crabs, etc.

11. Roundworms 25 000 different species (1.45% of the world’s total number of species) 25 000 different species (1.45% of the world’s total number of species) Common intestinal parasite of pets, hookworm, pinworm and trichinella Common intestinal parasite of pets, hookworm, pinworm and trichinella

12. Fish 22 000 different species (1.27% of the world’s total number of species) 22 000 different species (1.27% of the world’s total number of species) Includes all fish such as salmon, trout, bass, marlins, sharks, stingrays, etc. Includes all fish such as salmon, trout, bass, marlins, sharks, stingrays, etc.

13. Flatworms 20 000 different species (1.16% of the world’s total number of species) 20 000 different species (1.16% of the world’s total number of species) Group including flatworms called platyhelminthes Group including flatworms called platyhelminthes

14. Earthworms and Leeches 12 000 different species (0.70% of the world’s total number of species) 12 000 different species (0.70% of the world’s total number of species) Just as the group says, includes earthworms and leeches Just as the group says, includes earthworms and leeches

15. Reptiles and Amphibians 10 500 different species (0.61% of the world’s total number of species) 10 500 different species (0.61% of the world’s total number of species) Includes frogs, toads, crocodiles, iguanas, alligators, etc. Includes frogs, toads, crocodiles, iguanas, alligators, etc.

16. Jellyfish, Corals and Anemones 10 000 different species (0.58% of the world’s total number of species) 10 000 different species (0.58% of the world’s total number of species) Includes the above species – jellyfish, corals and anemones Includes the above species – jellyfish, corals and anemones

17. Sponges 10 000 different species (0.58% of the world’s total number of species) 10 000 different species (0.58% of the world’s total number of species) Group including the sponges is called Porifera Group including the sponges is called Porifera

18. Birds 10 000 different species (0.58% of the world’s total number of species) 10 000 different species (0.58% of the world’s total number of species) Includes eagles, hawks, albatrosses, robins, sparrows, etc. Includes eagles, hawks, albatrosses, robins, sparrows, etc.

19. Mammals 4 500 different species (0.26% of the world’s total number of species) 4 500 different species (0.26% of the world’s total number of species) Includes bears, monkeys, whales, tigers, etc. Includes bears, monkeys, whales, tigers, etc.

20. Bacteria 4 000 different species (0.23% of the world’s total number of species) 4 000 different species (0.23% of the world’s total number of species) Found everywhere, cause many diseases and illnesses in other organisms Found everywhere, cause many diseases and illnesses in other organisms

23. Species Distribution There are many more species located near the equator (particularly in the rainforests) There are many more species located near the equator (particularly in the rainforests) As you move further north or further south from the equator, the number of species decline – see example below As you move further north or further south from the equator, the number of species decline – see example below Species of snakes in Mexico – 293Species of snakes in Mexico – 293 Species of snakes in US – 126Species of snakes in US – 126 Species of snakes in Canada - 22Species of snakes in Canada - 22