Bio 180 Exam 4 Questions With Correct
Answers
What is the most important difference between species richness and species
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diversity? - CORRECT ANSWER✔✔-Species diversity takes species number AND
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relative frequency into account.
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What is the key difference between primary productivity and net primary
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productivity? - CORRECT ANSWER✔✔-Net primary productivity represents just
| | | | | | | |
the energy used to build biomass.
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"Diversity leads to stability." This slogan claims that ecosystems with a large
| | | | | | | | | | | |
number of species present are more stable than ecosystems with a low number
| | | | | | | | | | | | |
of species. Which of the following lines of evidence support this claim? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-As the number of plant species increases, resistance and
| | | | | | | | | |
resilience increases |
What is biomass? - CORRECT ANSWER✔✔-total organic matter, usually measured
| | | | | | | | | |
per plant or per square meter
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Why would a sampling effect lead to higher productivity in an experimental plot?
| | | | | | | | | | | |
- CORRECT ANSWER✔✔-If a few highly productive species are present in a
| | | | | | | | | | | | |
community, biomass production will be a function of whether or not they are
| | | | | | | | | | | | |
present.
, What is a functional group? - CORRECT ANSWER✔✔-species that use resources
| | | | | | | | | | |
or allocate resources in a similar way
| | | | | |
In biological communities, what is "resistance?" - CORRECT ANSWER✔✔-degree
| | | | | | | | |
of change during and after a disturbance
| | | | | |
In biological communities, what is "resilience?" - CORRECT ANSWER✔✔-ability to
| | | | | | | | |
|"bounce back" after a disturbance, to the pre-disturbance conditiion
| | | | | | | |
What is a "natural experiment?" - CORRECT ANSWER✔✔-an
| | | | | | |
unplanned/unmanipulated change in environmental conditions that can be
| | | | | | | | |
exploited to answer a question | | | |
Both sets of data graphed in Fig. 54.12 (5th edition: Fig. 57.12) have the same
| | | | | | | | | | | | | | |
general shape. Which of the following is the best interpretation of this pattern? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-Biodiversity is beneficial, but the effects "level off."
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Which of the following is an example of commensalism? - CORRECT ANSWER✔✔-
| | | | | | | | | | |
Cattle egrets walk beside cattle, eating insects disturbed by the movements of the
| | | | | | | | | | | |
cows.
|
What does it mean to say that a species has a wide niche breadth? - CORRECT
| | | | | | | | | | | | | | | |
ANSWER✔✔-It can use a wide array of values of a particular resource or tolerate
| | | | | | | | | | | | | |
an array of conditions.
| | |
Answers
What is the most important difference between species richness and species
| | | | | | | | | | |
diversity? - CORRECT ANSWER✔✔-Species diversity takes species number AND
| | | | | | | | |
relative frequency into account.
| | |
What is the key difference between primary productivity and net primary
| | | | | | | | | | |
productivity? - CORRECT ANSWER✔✔-Net primary productivity represents just
| | | | | | | |
the energy used to build biomass.
| | | | |
"Diversity leads to stability." This slogan claims that ecosystems with a large
| | | | | | | | | | | |
number of species present are more stable than ecosystems with a low number
| | | | | | | | | | | | |
of species. Which of the following lines of evidence support this claim? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-As the number of plant species increases, resistance and
| | | | | | | | | |
resilience increases |
What is biomass? - CORRECT ANSWER✔✔-total organic matter, usually measured
| | | | | | | | | |
per plant or per square meter
| | | | |
Why would a sampling effect lead to higher productivity in an experimental plot?
| | | | | | | | | | | |
- CORRECT ANSWER✔✔-If a few highly productive species are present in a
| | | | | | | | | | | | |
community, biomass production will be a function of whether or not they are
| | | | | | | | | | | | |
present.
, What is a functional group? - CORRECT ANSWER✔✔-species that use resources
| | | | | | | | | | |
or allocate resources in a similar way
| | | | | |
In biological communities, what is "resistance?" - CORRECT ANSWER✔✔-degree
| | | | | | | | |
of change during and after a disturbance
| | | | | |
In biological communities, what is "resilience?" - CORRECT ANSWER✔✔-ability to
| | | | | | | | |
|"bounce back" after a disturbance, to the pre-disturbance conditiion
| | | | | | | |
What is a "natural experiment?" - CORRECT ANSWER✔✔-an
| | | | | | |
unplanned/unmanipulated change in environmental conditions that can be
| | | | | | | | |
exploited to answer a question | | | |
Both sets of data graphed in Fig. 54.12 (5th edition: Fig. 57.12) have the same
| | | | | | | | | | | | | | |
general shape. Which of the following is the best interpretation of this pattern? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-Biodiversity is beneficial, but the effects "level off."
| | | | | | | |
Which of the following is an example of commensalism? - CORRECT ANSWER✔✔-
| | | | | | | | | | |
Cattle egrets walk beside cattle, eating insects disturbed by the movements of the
| | | | | | | | | | | |
cows.
|
What does it mean to say that a species has a wide niche breadth? - CORRECT
| | | | | | | | | | | | | | | |
ANSWER✔✔-It can use a wide array of values of a particular resource or tolerate
| | | | | | | | | | | | | |
an array of conditions.
| | |
