6. Life is organized into groups. Study Figure 1.14. Which level contains the greatest diversity of organism? domain The least? species Write out the levels of organization in order. species, genus, family, order, class, phylum, kingdom, Domain Most people use a mnemonic device to remember these levels. If you have one, write it here . 7. Taxonomy is the branch of biology that names and classifies organisms. Because of new molecular information, there have been many changes in placement of certain groups in recent years. Notice that all life is now organized in your text into 3 domains rather than the 5 kingdoms you may have learned earlier. Put the kingdoms mentioned in the text in the space above the proper domain names shown here. Bacteria: Archaea: Eukarya: 8. What two main points were articulated in Darwin s The Origin of Species ? 9. What did Darwin propose as the mechanism of evolution? Summarize this mechanism. 10. Study Figure 1.22, which shows an evolutionary tree. What is indicated by each twig? What do the branch points represent? Where did the common ancestor of the Galápagos finches originate? Concept 1.3 Scientists use two main forms of inquiry in their study of nature 11. What are the two main types of scientific inquiry? Give an example of each. 12. What is data ? 13. Distinguish between quantitative and qualitative data. Which type would be presented in a data chart and could be graphed? Which type is found in the field sketches made by Jane Goodall? 14. In science, how do we define hypothesis ? 15.A scientific hypothesis has two important qualities. The first is that it is testable . What is the second? 16. Are scientific hypotheses proved? Explain your answer! 17. Look at Figure 1.24. Use it to write a hypothesis using the If . . . then . . . format. 18. What is a controlled experiment ? 19. The text points out a common misconception about the term controlled experiment . In the snake mimicry experiment, what factors were held constant ? 20. Why are supernatural explanations outside the bounds of science? 21. Explain what is meant by a scientific theory by giving the three ways your text separates a theory from a hypothesis or mere speculation.
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