Natural Selection Review

Differences among individual members of the same species are referred to as....

• variation
• fitness
• natural selection
• adaptation

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Which of the following is true of variation?

• It is necessary for natural selection.
• It exists in almost all populations.
• It is caused by mutations and sexual reproduction. 
• All of the choices are correct. 

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Of the following, which is NOT part of Darwin's theory of natural selection?

• Suitable variations in a population tend to be passed on while unsuitable variations in a population are not. 
• Variations in a population exist and those variations are inherited. 
• Individuals with variations suitable to their environment have shorter lifespans and produce fewer offspring.
• Living things tend to produce more offspring than can survive. 

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Darwin began to formulate his concept of evolution by natural selection after...

• experimention with animals.
• observations of many species of plants and animals while aboard the H.M.S Beagle. 
• reading the writings of Mendel.
• a long conservation with Captain Fitzroy. 

According to Darwin's theory of natural selection, the individuals that tend to survive are those that have...

• variations best suited to the environment. 
• the ability to change their bodies to fit the environment. 
• the best luck. 
• the biggest body. 

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What is a trait that all of the members of a species have that specifically fits their environment?

• variation

• fitness

• overproduction

• adaptation

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Individuals in a population that have a variation that gives them an advantage in their environment are more likely to ...

• survive and reproduce.
• die and not reproduce. 
• move to a different environment. 
• change their characteristics to fit the environment. 

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The variety of peppered moth that survived after soot covered the trees was... 

• dark and able to blend in on the soot covered trees.
• light and not able to blend in on the soot covered trees. 
• able to change their color to fit the trees color. 
• orange. 

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Giraffes can make their necks longer in order to eat leaves from trees.

• false

• true

Who believed that giraffes have long necks because competition for food meant that giraffes with slightly longer necks could get more food and survived longer to pass on their genes to their offspring who also had longer necks.  

• Jean Baptise Lamarck
• Charles Darwin
• Gregor Mendel

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