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Natural Selection Quiz

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Charles Darwin’s major contribution to biology was his theory of ____
a.
the variation of species by diversification.
b.
the creation of species by molecular synthesis.
c.
the evolution of species by natural selection.
d.
the extinction of species by natural catastrophes.
 

 2. 

Natural selection acts on ____
a.
environmental variations.
b.
genetic similarities in populations.
c.
genetic variation of individuals in a population.
 

 3. 

Natural processes such as speciation and gradualism provide the genetic basis for _____.
a.
evolution
c.
biogenesis
b.
spontaneous generation
d.
sexual reproduction
 

 4. 

Natural selection can best be defined as the _____.
a.
survival of the biggest and strongest organisms in a population
b.
elimination of the smallest organisms by the biggest organisms
c.
survival and reproduction of the organisms that occupy the largest area
d.
survival and reproduction of the organisms that are genetically best adapted to the environment
 

 5. 

What type of adaptation is shown in Figure 15-4?
mc005-1.jpg
Figure 15-4
a.
mimicry
c.
artificial selection
b.
camouflage
d.
homologous structure
 

Completion
Complete each statement.
 
 
nar001-1.jpg
Figure 6
 

 6. 

These butterflies illustrate the principle of ____________________.
 

 

 7. 

Human activities such as agriculture are reducing the habitats of many animals. If no suitable environment remains for a species, it will become ____________________.
 

 

 8. 

An ____________________ species is one that is threatened with becoming extinct.
 

 

 9. 

The concept that evolution occurs over long periods of stability that are interrupted by geologically brief periods of change is known as _________________________.
 

 

 10. 

____________________ is a mechanism for change in a population in which organisms with favorable variations live, reproduce, and pass on their favorable traits.
 

 



 
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