7 th Grade Science Classification Review

Transcription

1 7 th Grade Science Classification Review

2 #1 What is a dichotomous key? A chart that classifies A: organisms according B: to their DNA A tool used to examine organisms and their structures to help identify the organism C: Nether D: Both

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

4 #2 Why do scientists classify organisms? To organize living A: things with similarities B: into groups Deciding which organisms will survive and reproduce C: Neither D: Both

5 A. To organize living things with similarities into groups

6 #3 Using the dichotomous key, identify the name of Bird X A: Certhidea B: Platyspiza C: Geospiza D: Camarhynchus

7 B. Platyspiza

8 #4 Using the dichotomous key, identify the name of Bird Z A: Certhidea B: Platyspiza C: Geospiza D: Camarhynchus

9 D. Camarhynchus

10 #5 What is natural selection? Process by which organisms that are better A: suited to their environment B: are able to survive and reproduce. The process by which scientists select organisms from nature C: Both D: None

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

12 #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? A: Natural selection B: Selective breeding C: Natural breeding D: None of these

13 A. Natural selection

14 #7 What is selective breeding? Humans choose Movement of organisms of the same A: organisms from one B: species to create place to another offspring with special traits C: Both D: Either

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

16 #8 Two processes that affect genetic traits. A: Mitosis and Meiosis B: Extraction and extinction C: Selective breeding and D: natural selection Migration and hybernation

17 C. Selective breeding and natural selection

18 #9 What is migration and why do animals migrate? A: The movement of organisms from one place to another to insure survival B: Organisms remaining in one location as a means of insuring survival C: Neither D: Both

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

20 #10 Monarch butterflies flying from Canada to Mexico is an example of. A: Natural selection B: Expedition C: Migration D: None of these

21 C. Migration

22 #11 What causes animals to be diverse or different from each other? Adapting to their A: environment is not B: They must adapt to their important environment C: Both D: Neither

23 B. They must adapt to their environment

24 #12 A chameleon has the ability to change colors when needed. How does this characteristic help it to survive? It helps the chameleon A: to blend in with its B: background It helps to insulate the chameleon from cold weather C: It allows it attract other D: chameleons None of these

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

26 #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? The behavior must The behavior must A: attract other B: affect the chameleon s chameleons likelihood of survival The behavior must C: occur only during D: certain seasons None of these

27 B. The behavior must affect the chameleon s likelihood of survival

28 #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? It is trying to A: attract other B: salamanders Its colorings are a warning to hungry predators to stay away. C: Neither D: Both

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

30 #15 Which would be the best way to organize information when classifying animals according to animal group and recorded number extinct. Line Graph Bar Graph Data Table A: Bar Graph B: Line Graph C: Data Table D: All of these

31 C. Data Table

32 #16 Which of the following characteristics in cattle is most likely to have occurred because of selective breeding done by humans? Cows that produce A: B: more milk Cows that eat grass C: Cows that are not D: domesticated Both

33 A. Cows that produce more milk

34 #17 In which kingdom should this organism be classified? *Is Multicellular *Is Autotrophic *Has cell wall Has cell nuclei A: Fungi B: Eubacteria C: Plantae D: Animalia

35 C. Plantae

36 Great Job!!!! Thank you for playing!