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Origins of the Linnaean System: Naming & Classifying Organisms

Learn about the reasons why scientists developed taxonomic systems and the historical development of scientific naming and classification systems. Discover how the modern Linnaean system differs from earlier systems.

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Origins of the Linnaean System: Naming & Classifying Organisms

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  1. Preview • Science Concepts • Using Science Graphics • Writing Skills

  2. 1. Why do biologists have taxonomic systems? A. to provide descriptive Latin names B. to maintain a small number of taxa C. to provide consistent ways to identify and classify organisms as they are being studied D. to construct a family tree that predicts how many species may be discovered in the future

  3. 1. Why do biologists have taxonomic systems? A. to provide descriptive Latin names B. to maintain a small number of taxa C. to provide consistent ways to identify and classify organisms as they are being studied D. to construct a family tree that predicts how many species may be discovered in the future

  4. 2. Which taxonomic system was developed by Carl Linnaeus in the 1750s and is used today? F. cladistics G. taxonomic phylogeny H. the polynomial system J. binomial nomenclature

  5. 2. Which taxonomic system was developed by Carl Linnaeus in the 1750s and is used today? F. cladistics G. taxonomic phylogeny H. the polynomial system J. binomial nomenclature

  6. The diagram shows the major levels of taxonomy in the modern Linnaean system. Use the diagram to answer the following questions.3. Which level represents the genus category? A. level 1 B. level 2 C. level 7 D. level 8

  7. The diagram shows the major levels of taxonomy in the modern Linnaean system. Use the diagram to answer the following questions.3. Which level represents the genus category? A. level 1 B. level 2 C. level 7 D. level 8

  8. The diagram shows the major levels of taxonomy in the modern Linnaean system. Use the diagram to answer the following questions.4. Which level represents the kingdom category? F. level 1 G. level 2 H. level 7 J. level 8

  9. The diagram shows the major levels of taxonomy in the modern Linnaean system. Use the diagram to answer the following questions.4. Which level represents the kingdom category? F. level 1 G. level 2 H. level 7 J. level 8

  10. This diagram shows the relationship between several types of plants. Use the diagram to answer the following questions.5. Which derived character is shared by pine trees and flowering plants but not ferns? A. seeds B. flowers C. mosses D. vascular tissue

  11. This diagram shows the relationship between several types of plants. Use the diagram to answer the following questions.5. Which derived character is shared by pine trees and flowering plants but not ferns? A. seeds B. flowers C. mosses D. vascular tissue

  12. This diagram shows the relationship between several types of plants. Use the diagram to answer the following questions.6. Which of the following pairs of plant groups form a clade that is exclusive of all other plants? F. mosses and ferns G. ferns and pine trees H. mosses and flowering plants J. pine trees and flowering plants

  13. This diagram shows the relationship between several types of plants. Use the diagram to answer the following questions.6. Which of the following pairs of plant groups form a clade that is exclusive of all other plants? F. mosses and ferns G. ferns and pine trees H. mosses and flowering plants J. pine trees and flowering plants

  14. This diagram shows the relationship between several types of plants. Use the diagram to answer the following questions.7. What is the name of the domain that contains all of the organisms shown in the diagram? A. Algae B. Plantae C. Eukarya D. Bacteria

  15. This diagram shows the relationship between several types of plants. Use the diagram to answer the following questions.7. What is the name of the domain that contains all of the organisms shown in the diagram? A. Algae B. Plantae C. Eukarya D. Bacteria

  16. 8. Describe the origins of the modern Linnaean system of taxonomy.

  17. 8. Describe the origins of the modern Linnaean system of taxonomy. Sample answer: The modern Linnaean system had its origin in the work of Carl Linnaeus in the 1700s. He tried to catalog many organisms, and proposed a consistent system for naming and grouping them. His system is still used, although the levels of grouping have been modified over time.

  18. 9. Write an essay that summarizes the historical development of scientific naming and classification systems. Include the reasons why such systems were invented, and describe the ways that modern systematics differs from earlier systems.

  19. 9. Write an essay that summarizes the historical development of scientific naming and classification systems. Include the reasons why such systems were invented, and describe the ways that modern systematics differs from earlier systems. Essays should include how Linnaeus cataloged the known species and recognized a need for unique names to avoid confusion among scientists. As awareness of the diversity of life grew, Linnaeus’ system had shortcomings. New technologies enable closer examination of organisms resulting in new hypotheses about their evolutionary relationships.

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