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Chapter 2 Ecology Test

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 
 
chapter_2_test_files/i0020000.jpg
Figure 2-1
 

 1. 

Referring to Figure 2-1, suppose 10 000 units of energy are available at the level of the grasses. What is the total number of energy units lost by the time energy reaches the coyote?
a.
990 units
c.
9990 units
b.
90 units
d.
9900 units
 

 2. 

Referring to Figure 2-1, the coyotes would be considered _____.
a.
third-order consumers
c.
second-order consumers
b.
herbivores
d.
decomposers
 

 3. 

Referring to Figure 2-1, energy flows from _____.
a.
coyotes to grasses
c.
cats to mice
b.
mice to cats
d.
coyotes to cats
 

 4. 

Referring to Figure 2-1, as matter and energy move from grasses to coyotes, the amount of available energy _____.
a.
increases
b.
decreases then increases
c.
decreases
d.
increases or decreases but population size remains the same
 

 5. 

Referring to Figure 2-1, the relationship between cats and mice could best be described as _____.
a.
consumer-producer
c.
predator-prey
b.
parasite-host
d.
scavenger-carrion
 

 6. 

The group of animals in Figure 2-6 is an example of what?
chapter_2_test_files/i0080000.jpg
Figure 2-6
a.
ecosystem
c.
biosphere
b.
population
d.
community
 

 7. 

An ecologist who studies how several species in an area interact among each other and with the abiotic parts of the environment is interested in the biological organization level called a(n) _____.
a.
organism
c.
ecosystem
b.
community
d.
population
 

 8. 

An ecologist who studies how several species in an area interact is interested in the biological organization called a(n) _____.
a.
population
c.
organism
b.
ecosystem
d.
community
 

 9. 

Identify the abiotic factor labeled in the ecosystem shown in Figure 2-5.
chapter_2_test_files/i0110000.jpg
Figure 2-5
a.
rock
c.
mouse
b.
tree
d.
butterfly
 

 10. 

Some birds are known as honey guides because they may be followed by humans to wild beehives. When the humans take honey from the hives, the birds are able to feast on the honey and bees, too. This type of relationship can best be described as _____.
a.
commensalism
c.
mutualism
b.
symbiosis
d.
parasitism
 

 11. 

Carbon dioxide in the atmosphere enters the biotic parts of the biosphere through _____.
a.
photosynthesis
c.
burning of forests
b.
combustion of fossil fuels
d.
all of these
 

 12. 

Nitrogen is released to the abiotic parts of the biosphere from the processes of death and _____.
a.
decay by bacteria
c.
infiltration of groundwater
b.
runoff
d.
lightning in storm clouds
 

 13. 

Which organism shown in the pyramid shown in Figure 2-9 receives the highest percentage of energy from the sun?
chapter_2_test_files/i0150000.jpg
Figure 2-9
a.
birds
c.
grass
b.
grasshoppers
d.
fox
 

 14. 

Water is lost to the abiotic parts of the biosphere from the biotic parts by the process of _____.
a.
photosynthesis
c.
infiltration
b.
transpiration
d.
precipitation
 

 15. 

The organism shown in Figure 2-12 is involved in which type of symbiosis?
chapter_2_test_files/i0170000.jpg
Figure 2-12
a.
mutualism
c.
parasitism
b.
predatorism
d.
commensalism
 

 16. 

Where is the biosphere in Figure 2-4?
chapter_2_test_files/i0180000.jpg
Figure 2-4
a.
mantle
c.
upper mantle
b.
earth’s crust
d.
core
 

 17. 

Cougars are predators that often eat weakened or diseased animals. This is a description of the _____ of cougars.
a.
habitat
c.
niche
b.
community
d.
none of these
 

 18. 

The organisms growing on the log in Figure 2-8 are ____?
chapter_2_test_files/i0200000.jpg
Figure 2-8
a.
autotrophs
c.
producers
b.
decomposers
d.
carnivores
 

 19. 

What type of cycle is depicted in Figure 2-10?
chapter_2_test_files/i0210000.jpg
Figure 2-10
a.
nitrogen
c.
carbon
b.
phosphorus
d.
water
 

 20. 

Sea stars live in saltwater ecosystems. Some species live in shallow tidal pools, while others live in the deepest parts of the oceans. This is a description of the _____ of sea stars.
a.
niche
c.
habitat
b.
community
d.
none of these
 

 21. 

In the energy pyramid shown in Figure 2-7, which level has the smallest number of organisms?
chapter_2_test_files/i0230000.jpg
Figure 2-7
a.
grass
c.
birds
b.
grasshoppers
d.
fox
 

 22. 

What type of ecosystem is shown in Figure 2-11?
chapter_2_test_files/i0240000.jpg
Figure 2-11
a.
terrestrial
c.
acquatic
b.
abiotic
d.
population
 



 
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