Georgia Science Grade 7

Chapter 6: Adaptations over Time

CRCT Practice

1
A species is a group of organisms
A)that lives together with similar characteristics.
B)that shares similar characteristics and can reproduce among themselves to produce fertile offspring.
C)across a wide area that cannot reproduce.
D)that chooses mates from among themselves.
2
According to Lamarck's hypothesis of acquired characteristics, which statement best explains the changes in the camel over time?

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A)All characteristics developed during an individual's lifetime are passed on to offspring.
B)Characteristics that do not help the animal survive are passed to offspring.
C)Variation of the species leads to adaptation.
D)Individuals moving from one area to another carry with them new characteristics.
3
What, besides competition for food, contributed to the evolution of the species of Darwin's finches?

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A)predation
B)natural disaster
C)DNA
D)variation in beak shapes
4
Some harmless species imitate or mimic a poisonous species as a means for increased survival.What is this an example of?
A)acquired characteristics
B)adaptation
C)variation
D)geographic isolation
5
The marine iguana of the Galápagos Islands enters the ocean and feeds on seaweed. What is this an example of?
A)adaptation
B)gradualism
C)survival of the fittest
D)acquired characteristic
6
Which of the following is considered an important factor in natural selection?
A)limited reproduction
B)competition for resources
C)no variations within a population
D)plentiful food and other resources
7
Which is not a benefit of camouflage?
A)increases chance to reproduce
B)increases ability to locate prey
C)helps escape predation
D)increases chance of survival
8
In which type of environment would the albino lemur not be at a disadvantage due to its color?

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A)thick forest
B)sandy desert
C)snowy tundra
D)open grassland
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