Name: 
 

Stability in an Ecosystem - Pre-test



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

 1. 

As succession proceeds, _________
a.
species diversity decreases and food web complexity increases. 
b.
species diversity increases and food web complexity increases.
c.
stability increases and food web complexity decreases. 
d.
species diversity decreases and community productivity increases. 
e.
stability increases and food web complexity increases. 
 

 2. 

In contrast to earlier communities, climax communities ________ 
a.
are relatively unstable.
b.
are more species diverse. 
c.
contain faster growing species. 
d.
are more productive. 
e.
exhibit primarily density-independent controls. 
 

 3. 

If Federal funding or land is involved in any major construction projects an analysis of the potential impacts is mandated in the form of a/an _______ 
a.
environmental impact statement.
b.
environmental interests proposal. 
c.
environmental protection plan. 
d.
environmental solutions analysis. 
e.
conservation impact statement. 
 

 4. 

The main factors in population growth are _____ 
a.
predators and disease. 
b.
limiting factors. 
c.
the reproductive rate and recruitment. 
d.
birth rate and death rate. 
e.
environmental resistance.
 

 5. 

Which of the following statements is true? 
a.
Mutations are always harmful. 
b.
Darwin incorporated Mendel's genetics into his theory of natural selection. 
c.
Humans possess no more than 10,000 genes. 
d.
Genes are the source of individual variation. 
e.
None of the above.
 



 
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