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Kingdoms and Domains

Kingdoms and Domains . Section 18–3 This section describes the six kingdoms of life as they are now identified. It also describes the three-domain system of classification. . The Tree of Life Evolves . Is the following sentence true or false?

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Kingdoms and Domains

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  1. Kingdoms and Domains Section 18–3 • This section describes the six kingdoms of life as they are now identified. It also describes the three-domain system of classification.

  2. The Tree of Life Evolves Is the following sentence true or false? The scientific view of life was more complex in Linnaeus’s time. False

  3. The Tree of Life Evolves What fundamental traits did Linnaeus use to separate plants from animals? • Animals were mobile organisms that used food for energy. Plants were green, photosynthetic organisms that used energy from the sun.

  4. The Tree of Life Evolves What type of organisms were later placed in the kingdom Protista? • Microorganisms were later placed in this kingdom.

  5. The Tree of Life Evolves Mushrooms, yeast, and molds have been placed in their own kingdom, which is called____. • Fungi

  6. The Tree of Life Evolves Why did scientists place bacteria in their own kingdom, the Monera? • Bacteria lack the nuclei, mitochondria, and chloroplasts found in other forms of life.

  7. The Tree of Life Evolves List the two groups into which the Monera have been separated. • Eubacteria • Archaebacteria

  8. Complete the concept map.

  9. The Three-Domain System A more inclusive category than any other, including the kingdom, is the _____. domain

  10. The Three-Domain System • What type of analyses have scientists used to group modern organisms into domains? • They have used molecular analyses.

  11. Domain Bacteria • List the three domains. • Bacteria • Archaea • Eukarya

  12. Complete the chart below. CLASSIFICATION OF LIVING THINGS

  13. Domain Bacteria Circle the letter of each sentence that is true about members of the domain Bacteria. • They are prokaryotes. • They have rigid cell walls. • The cell walls contain peptidoglycans.

  14. Domain Bacteria • Is the following sentence true or false? All members of the domain Bacteria are parasites. • FALSE

  15. Domain Archaea Circle the letter of each sentence that is true about members of the domain Archaea. • They are unicellular.

  16. Domain Archaea • Is the following sentence true or false? Many members of the domain Archaea can survive only in the absence of oxygen. • true

  17. Domain Eukarya Circle the letter of each sentence that is true about all the members of the domain Eukarya. • They have a nucleus.

  18. Domain Eukarya

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