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Diversity of Life

Diversity of Life . Taxonomy. How would you classify these?. 3. 4. 1. 2. 2. 1. 3. 3. 4. 4. 1. 2. How would you classify these?. How would you classify these?. How we organize and classify life on Earth is a branch of science called taxonomy .

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Diversity of Life

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  1. Diversity of Life Taxonomy

  2. How would you classify these? 3 4 1 2 2 1 3 3 4 4 1 2

  3. How would you classify these?

  4. How would you classify these?

  5. How we organize and classify life on Earth is a branch of science called taxonomy. • It started in the 1700’s with Carl Linneaeus. • What would he have used to classify organisms? • He organized based on physical and structural features.

  6. Organizing the Diversity of Life • What are the purposes of taxonomy? • To identify organisms and represent relationships amongst them • What is today’s common classification system based on? • Based on an organism’s physical and structural features – the more features the closer the relationship • What are the two main features of Carl’s classification system? • Binomial nomenclature • Taxa

  7. Binomial Nomenclature • A method of naming organisms by using two names: the genus name and the species names • Scientific names are italicized • Species - resemble one another and can interbreed under natural conditions to produce fertile offspring.

  8. Taxonomy is all about hierarchy! Bee, oyster, dog, frog, domestic cat, horse, tiger, lion Animalia • Kingdom • Phylum • Class • Order • Family • Genus • Species • Species Chordata Dog, frog, domestic cat, horse, tiger, lion Mammalia Dog, domestic cat, horse, tiger, lion Carnivora Dog, domestic cat, tiger, lion Felidae Domestic cat, tiger, lion Panthera Tiger, lion leo Lion tigris Tiger King Philip Came Over From Germany Swimming

  9. Ursushorribilis Ursusamericanus Ursus maritimus Ailuropodamelanoleuca Phascolarctoscinereus

  10. Taxa • Kingdom • Phylum • Class • Order • Family • Genus • Species • Seven levels (taxa) for classification: • There are 6 kingdoms: • Animalia • Plantae • Fungi • Protista • Eubacteria • Archaebacteria

  11. Phylogenetic Tree • Used to help organize species based on their evolutionary history. • Like a family tree!

  12. Species Diversity • The similarities or differences between organisms helps to define each unique species. • Scientists have identified 1.9 million different species of organisms. • The actual number may about 8.8 million! With almost 90% of them being animals. • This shows the great amount of biodiversityon Earth.

  13. If we want to identify new organisms to see if they are a new species we can use a dichotomous key. • Uses physical and structural features to identify organisms.

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