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Strategies of Life

Strategies of Life. Chapter 20. Great Idea: Living things use many different strategies to deal with the problems of acquiring and using matter and energy. Chapter Outline. The Organization of Living Things What is Life Classifying Living Things Survival: A New Look at the Life Around You

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Strategies of Life

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  1. Strategies of Life Chapter 20 Great Idea: Living things use many different strategies to deal with the problems of acquiring and using matter and energy

  2. Chapter Outline • The Organization of Living Things • What is Life • Classifying Living Things • Survival: A New Look at the Life Around You • Strategies of Fungi • Strategies of Plants • Strategies of Animals

  3. The Organization of Living Things

  4. Ways of Thinking About Living Things • Levels • Biosphere • Ecosystem • Community • Population • Organism • Anatomy & physiology • Cellular • Molecular • All levels complement each other

  5. What Is Life?

  6. The Characteristics of Life • High degree of order and complexity • Part of larger systems of matter and energy • Life depends on chemical reactions in cells • Life requires liquid water • Organisms grow and develop • Regulate energy use • Share same genetic code, code is heritable • All living things are descended from a common ancestor

  7. Classifying Living Things

  8. Cataloging Life • Linnaean classification • Shared characteristics • Hierarchy • Kingdom • Phylum • Class • Order • Family • Genus • Species • Binomial nomenclature

  9. Classifying Life cont. • Kingdoms • Monera • Protista • Fungi • Plants • Animals

  10. Classifying Human Beings • Kingdom: Animals • Phylum: Chordates • Subphylum: vertebrates • Class: Mammals • Order: Primates • Family: Hominid • Genus: Homo • Species: sapien

  11. Implications of Linnaean Classification • Use of DNA • Similarity depends on time and change • Classification results from real events

  12. Survival: A New Look at the Life Around You

  13. Survival: A New Look at the Life Around You • Autotrophs • Heterotrophs • Dealing with complexity • Two basic tasks • Obtain and distribute molecules for energy • Reproduce

  14. Strategies of Fungi

  15. Strategies of Fungi • Growth • Filaments • Decomposers • Structure • Mass of filaments • Reproduction • Break filaments • Asexual reproduction • spores • Lichens • Two interdependent species

  16. Strategies of Plants

  17. The Simplest Plants • Phylum: Bryophytes • Structure • No roots • Photosynthetic • Reproduction • Sexual • Asexual

  18. Vascular Plants • Phylum: vascular plants • Structure • Roots, stems, leaves • Control water loss • Reproduction • Seedless • Gymnosperms • Angiosperms • Sexual and asexual

  19. Angiosperm

  20. Strategies of Animals

  21. Invertebrates • Invertebrates • No backbone • Most diverse animals • Arthropods • 70% of known animal species • Structure • exoskeleton

  22. Vertebrates • Organization • Ocean to terrestrial • Evolution • Earliest fish • Bony Fish • Amphibians • Reptiles • Birds • Mammals

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