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Unit 4 Review
Test Description: 8.L.4.1 and 8.L.4.2
Instructions: Answer all questions to get your test result.
1) What process is most responsible for the extinction of most species of plants and animals that have lived on Earth?
A
decrease in reproduction
B
gene mutation
C
environmental changes
D
selective breeding
2) Which would indicate that a series of fossils represent the evolution of the horse?
A
All of the fossils were located in the same place on Earth as horses.
B
All of the fossils show similar structures to that of the modern horse.
C
All of the fossils were found in the same layers of rocks as horse fossils.
D
All of the fossils are completely identical to horse bones.
3) A strawberry farmer finds that, after a hard freeze, some of his strawberries are still alive. Which best explains why these strawberries were able to survive?
A
They have larger leaves to protect the fruit than the other strawberries.
B
They have different genetic variations that cause them to be more resistant to cold temperatures.
C
They are able to reproduce more quickly than the other strawberries.
D
The color of the strawberries is darker, and they maintain their temperature better than other strawberries.
4) Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis?
A
They live in the same area of the ocean.
B
They eat the same food.
C
They have similar anatomies.
D
They swim the same way.
5) In the winter, the fur of the arctic fox is white. In summer, the fur darkens to a reddish brown. What most likely causes the fur of the fox to change color?
A
the amount of sunlight present
B
the fox’s age
C
the fox’s genes
D
the fox’s habitat
6) Which would best allow a species to survive environmental changes?
A
genetic diversity
B
low mutation rate
C
similar physical features
D
small population
7) What do transitional fossils best support?
A
the Theory of Continental Drift
B
the Theory of Biological Evolution
C
the Theory of Geological Evolution
D
the Law of Superposition
8) Tigers and household cats are members of the same family; however, their sizes are vastly different. What is the cause of this difference?
A
behavioral makeup
B
habitat size
C
genetics
D
biochemical makeup
9) Which best describes the similar function of wings in birds and butterflies?
A
homologous structures
B
analogous structures
C
embryological structures
D
vestigial structures
10) Which most likely led to major changes in biological evolution?
A
long time periods with no volcanic eruptions
B
separation of landmasses
C
short time periods of drought conditions
D
migration of animals from one area to another
*select an answer for all questions
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