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Bio 12E: Investigate and explain the interactions in an ecosystem

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

 1. 
The relationship between a whale and barnacles growing on its skin is an example of
a.
commensalism.
c.
mutualism.
b.
competition.
d.
parasitism.
 

 2. 
Most ecosystems tend to be complex because
a.
they are found in all climates.
b.
potential competitors in the ecosystem often occupy slightly different niches.
c.
they all contain a wide variety of producers.
d.
of symbiotic relationships within them.
 
 
bio12e-07_files/i0040000.jpg
 

 3. 
Refer to the illustration above. Because the two species of barnacles attempt to use the same resources, they are
a.
parasitic.
c.
mutualistic.
b.
in competition with each other.
d.
symbiotic.
 

 4. 
Organisms with light-producing body parts would most likely be found in
a.
the deep-water zone of lakes.
c.
open ocean surfaces.
b.
shallow ocean waters.
d.
deep ocean waters.
 

 5. 
Almost all of the Earth’s surface water is contained in
a.
ocean ecosystems.
c.
tropical rain forests.
b.
freshwater biomes.
d.
ponds and lakes.
 



 
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