Name: 
 

Unit B Chapter 6 Lesson 6 Assessment


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

 1. 
The first species living in an area is a
a.
primary species.
b.
first generation.
c.
explorer species.
d.
pioneer species.
 

 2. 
The gradual replacement of one community by another is called
a.
ecological succession.
b.
commensalism.
c.
natural resources.
d.
adaptation.
 

 3. 
Ecological succession in a place where a community already exists is called
a.
primary succession.
b.
secondary succession.
c.
a pioneer community.
d.
primary takeover.
 

 4. 
The first community living in an area is called a
a.
settler species.
b.
pioneer species.
c.
pioneer community.
d.
climax community.
 

 5. 
Ecological succession that happens where there are few, if any, living things is called
a.
climax communities.
b.
pioneer communities.
c.
secondary succession.
d.
primary succession.
 

 6. 
The final stage of succession in an area, unless a major change happens, is called a(n)
a.
animal community.
b.
pioneer community.
c.
successful community.
d.
climax community.
 

 7. 
When a farm is abandoned, one of the earliest changes that can be observed is
a.
a deciduous forest grows.
b.
large animals move in.
c.
tall weeds and grasses grow.
d.
plants die and decay.
 

 8. 
The gradual replacement of a pond with a deciduous forest is an example of
a.
a pioneer community.
b.
a secondary community.
c.
speciation.
d.
ecological succession.
 

 9. 
All ecosystems on our planet are
a.
pioneer communities.
b.
intertwined.
c.
independent.
d.
climax communities
 

 10. 
You can help ecosystems by
a.
reducing, reusing, and recycling.
b.
stockpiling trash.
c.
using more packaging.
d.
cutting down trees.
 



 
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