Name: 
 

Chapter 50



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

 1. 

Which of the following levels of organization is arranged in the correct sequence from most to least inclusive?
a.
community, ecosystem, individual, population
b.
ecosystem, community, population, individual
c.
population, ecosystem, individual, community
d.
individual, population, community, ecosystem
e.
individual, community, population, ecosystem
 

 2. 

Which of the following are important biotic factors that can affect the structure and organization of biological communities?
a.
precipitation, wind
b.
nutrient availability, soil pH
c.
predation, competition
d.
temperature, water
e.
light intensity, seasonality
 

 3. 

Which of the following abiotic factors has the greatest influence on the metabolic rates of plants and animals?
a.
water
b.
wind
c.
temperature
d.
rocks and soil
e.
disturbances
 

 4. 

Which of the following statements about aquatic biomes is false?
a.
The distribution of photosynthetic organisms is not limited by the quality and intensity of light in marine biomes.
b.
Many lakes in temperate regions are characterized by seasonal thermal stratification.
c.
Marine algae and photosynthetic bacteria produce a substantial portion of the biosphere's atmospheric oxygen.
d.
Many aquatic biomes exhibit pronounced vertical stratification of chemical variables.
e.
Marine biomes generally have a salt concentration that averages 3%.
 

 5. 

Generally speaking, deserts are located in places where air masses are usually
a.
cold.
b.
humid.
c.
rising.
d.
falling.
e.
expanding.
 

 6. 

Which marine zone would have the lowest rates of primary productivity (photosynthesis)?
a.
pelagic
b.
abyssal
c.
neritic
d.
continental shelf
e.
intertidal
 

 7. 

Probably the most important factor(s) affecting the distribution of biomes is (are)
a.
wind and water current patterns.
b.
species diversity.
c.
community succession.
d.
climate.
e.
day length and rainfall.
 

 8. 

Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of
a.
parallel evolution.
b.
convergent evolution.
c.
allopatric speciation.
d.
introgression.
e.
gene flow.
 

 9. 

Fire suppression by humans
a.
will always result in an increase in the number of species in a given biome.
b.
can change the species composition within biological communities.
c.
will result ultimately in sustainable production of increased amounts of wood for human use.
d.
is necessary for the protection of threatened and endangered forest species.
e.
both C and D
 

 10. 

Which type of biome would most likely occur in a climate with mild, rainy winters and hot, dry summers?
a.
desert
b.
taiga
c.
temperate grassland
d.
chaparral
e.
savanna
 



 
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