2. 7 th Grade Science Classification Review

3. A:B: A chart that classifies organisms according to their DNA A tool used to examine organisms and their structures to help identify the organism #1 What is a dichotomous key? C:D: NetherBoth

4. B. A tool used to examine organisms and their structures to help identify the organism

5. A:B: To organize living things with similarities into groups Deciding which organisms will survive and reproduce #2 Why do scientists classify organisms? C:D: NeitherBoth

6. A. To organize living things with similarities into groups

7. A: B: Certhidea Platyspiza C:D: Geospiza Camarhynchus Using the dichotomous key, identify the name of Bird X #3

8. B. Platyspiza

9. A: B: Certhidea Platyspiza C:D: Geospiza Camarhynchus Using the dichotomous key, identify the name of Bird Z #4

10. D. Camarhynchus

11. A:B: The process by which scientists select organisms from nature #5 What is natural selection? C:D: Both None Process by which organisms that are better suited to their environment are able to survive and reproduce.

12. A. Process by which organisms that are better suited to their environment are able to survive and reproduce.

13. A:B: Natural selection Selective breeding C:D: Natural breedingNone of these #6 The Galápagos Islands are famous for their many different species of finches all descended from a common ancestor. Which of the terms below would explain these differences?

14. A. Natural selection

15. A: B: Movement of organisms from one place to another Humans choose organisms of the same species to create offspring with special traits #7 What is selective breeding? C: D: BothEither

16. B. Humans choose organisms of the same species to create offspring with special traits

17. A:B: Mitosis and MeiosisExtraction and extinction #8 Two processes that affect genetic traits. C:D: Selective breeding and natural selection Migration and hybernation

18. C. Selective breeding and natural selection

19. A:B: The movement of organisms from one place to another to insure survival Organisms remaining in one location as a means of insuring survival #9 What is migration and why do animals migrate? C:D: NeitherBoth

20. A. The movement of organisms from one place to another to insure survival

21. A:B: Natural selection Expedition C:D: MigrationNone of these #10 Monarch butterflies flying from Canada to Mexico is an example of ____________.

22. C. Migration

23. A:B: Adapting to their environment is not important They must adapt to their environment C:D: BothNeither #11 What causes animals to be diverse or different from each other?

24. B. They must adapt to their environment

25. A:B: It helps the chameleon to blend in with its background It helps to insulate the chameleon from cold weather C:D: It allows it attract other chameleons None of these #12 A chameleon has the ability to change colors when needed. How does this characteristic help it to survive?

26. A. It helps the chameleon to blend in with its background.

27. A:B: The behavior must attract other chameleons The behavior must affect the chameleons likelihood of survival C:D: The behavior must occur only during certain seasons None of these #13 A chameleon has the ability to change colors when needed. Which of these must be true in order for natural selection to influence this behavior?

28. B. The behavior must affect the chameleons likelihood of survival

29. A:B: It is trying to attract other salamanders Its colorings are a warning to hungry predators to stay away. C:D: NeitherBoth #14 The skin of the fire salamander secretes a nerve toxin that can paralyze a potential predator. It also has black and yellow markings. What inference can be made about the fact that this salamander has black and yellow markings?

30. B. Its coloring serve as a warning to hungry predators to stay away.

31. A: B: Bar Graph Line Graph C:D: Data TableAll of these Which would be the best way to organize information when classifying animals according to animal group and recorded number extinct. #15 Bar Graph Line Graph Data Table

32. C. Data Table

33. A:B: Cows that produce more milk Cows that eat grass C:D: Cows that are not domesticated Both #16 Which of the following characteristics in cattle is most likely to have occurred because of selective breeding done by humans?

34. A. Cows that produce more milk

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