7 th Grade Science Classification Review

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

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

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

A. To organize living things with similarities into groups

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

C. Geospiza

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

D. Camarhynchus

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 produce offspring and reproduce

A. Process by which organisms that are better suited to their environment produce offspring and reproduce

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?

A. Natural selection

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

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

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

C. Selective breeding and natural selection

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

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

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

C. Migration

A:B: The behavior must attract other chameleons The behavior must affect the chameleon’s likelihood of survival C:D: The behavior must occur only during certain seasons None of these #11 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?

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

A:B: Cows that produce more milk Cows that eat grass C:D: Cows that are not domesticated Both #12 Which of the following characteristics in cattle is most likely to have occurred because of selective breeding done by humans?

A. Cows that produce more milk

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