umaine bio100 exam 1 UPDATED ACTUAL
Exam Questions and CORRECT Answers
based on the intermediate disturbance hypothesis, a community's species diversity is increased
by - CORRECT ANSWER - moderate leve;sof disturbance
white-breasted nuthatches and downy woodpeckers both eat insects that hide in the furrows of
bark in hardwood trees. The down woodpecker searches for insects by hunting from the bottom
of the tree trunk towards the top,, whereas the white-breasted nuthatch searches form the top of
the trunk down. These hunting behaviors best illustrate which of the following ecological
concepts? - CORRECT ANSWER - resource partitioning
which of the following ecosystems has the LOWEST net primary production per square meter? -
CORRECT ANSWER - Open Ocean
If you applied fungicide to a cornfield, what would you expect to happen to the rates of
decomposition and net ecosystem production (NEP)? - CORRECT ANSWER -
decomposition would decrease and NEP would increase
To return nutrients, an ecosystem must have, at minimum, - CORRECT ANSWER -
producers and decomposers
Cod is a poplar fish caught for human consumption. If too many cod were removed due to
overfishing, which of the following would most likely occur? (food web diagram) - CORRECT
ANSWER - The leopard seals would eat more squid
If phytoplankton contain 50KJ of energy, how much of that energy will be transferred to
zooplankton grazing on those phytoplankton? - CORRECT ANSWER - 5KJ
Which of the following is the most complete example of an ecosystem? - CORRECT
ANSWER - all of the organisms and their physical environment in and around the Stillwater
river
, Owls ear rats,mice,shrews, and small birds. Assume that one owl consumes 5,000J of animal
material, loses 2,300J in feces and own pellets, and uses 2,600J for cellular respiration. What is
the apprroximate production efficiency for this owl? - CORRECT ANSWER - 4%
When considering biogeochemical cycles, a major reservoir for both carbon and nitrogen is.. -
CORRECT ANSWER - The atmosphere
For mostterrestrial ecosystems, pyramids composed of species abundances, biomass, and energy
are similar in that they have a broad base and a narrow top. The primary reason for this pattern is
that.. - CORRECT ANSWER - at each step, energy is lost from the system, because pf the
second law of thermodynamics
which trophic level is the most burnable to going extinct? - CORRECT ANSWER - tertiary
consumer level
through time, the lineage that led to modern whales shows a change from four-limbed land
animals to aquatic animals with two limbs that function as flippers. This change is best explained
by.. - CORRECT ANSWER - natural selection
dawwin's finches, collected from each of the different Galapagos Islands, provided the evidence
that... - CORRECT ANSWER - individuals on neighboring islands look similar due to
common ancestry
both matter and energy are required by all living organisms. Matter can be acquired from
surroundings but energy must be originally captured from ______ via _____ - CORRECT
ANSWER - sunlight/ photosynthesis
which of the following is most likely a single-celled organism lacking organelles and found in a
"normal" pond on the UMAINE campus? - CORRECT ANSWER - bacteria
imagine there is a new species-specific fishing regulation that mandates only adult fish of this
species that are 75 cm or longer may be kept and shorter fish must be released. Based on your
Exam Questions and CORRECT Answers
based on the intermediate disturbance hypothesis, a community's species diversity is increased
by - CORRECT ANSWER - moderate leve;sof disturbance
white-breasted nuthatches and downy woodpeckers both eat insects that hide in the furrows of
bark in hardwood trees. The down woodpecker searches for insects by hunting from the bottom
of the tree trunk towards the top,, whereas the white-breasted nuthatch searches form the top of
the trunk down. These hunting behaviors best illustrate which of the following ecological
concepts? - CORRECT ANSWER - resource partitioning
which of the following ecosystems has the LOWEST net primary production per square meter? -
CORRECT ANSWER - Open Ocean
If you applied fungicide to a cornfield, what would you expect to happen to the rates of
decomposition and net ecosystem production (NEP)? - CORRECT ANSWER -
decomposition would decrease and NEP would increase
To return nutrients, an ecosystem must have, at minimum, - CORRECT ANSWER -
producers and decomposers
Cod is a poplar fish caught for human consumption. If too many cod were removed due to
overfishing, which of the following would most likely occur? (food web diagram) - CORRECT
ANSWER - The leopard seals would eat more squid
If phytoplankton contain 50KJ of energy, how much of that energy will be transferred to
zooplankton grazing on those phytoplankton? - CORRECT ANSWER - 5KJ
Which of the following is the most complete example of an ecosystem? - CORRECT
ANSWER - all of the organisms and their physical environment in and around the Stillwater
river
, Owls ear rats,mice,shrews, and small birds. Assume that one owl consumes 5,000J of animal
material, loses 2,300J in feces and own pellets, and uses 2,600J for cellular respiration. What is
the apprroximate production efficiency for this owl? - CORRECT ANSWER - 4%
When considering biogeochemical cycles, a major reservoir for both carbon and nitrogen is.. -
CORRECT ANSWER - The atmosphere
For mostterrestrial ecosystems, pyramids composed of species abundances, biomass, and energy
are similar in that they have a broad base and a narrow top. The primary reason for this pattern is
that.. - CORRECT ANSWER - at each step, energy is lost from the system, because pf the
second law of thermodynamics
which trophic level is the most burnable to going extinct? - CORRECT ANSWER - tertiary
consumer level
through time, the lineage that led to modern whales shows a change from four-limbed land
animals to aquatic animals with two limbs that function as flippers. This change is best explained
by.. - CORRECT ANSWER - natural selection
dawwin's finches, collected from each of the different Galapagos Islands, provided the evidence
that... - CORRECT ANSWER - individuals on neighboring islands look similar due to
common ancestry
both matter and energy are required by all living organisms. Matter can be acquired from
surroundings but energy must be originally captured from ______ via _____ - CORRECT
ANSWER - sunlight/ photosynthesis
which of the following is most likely a single-celled organism lacking organelles and found in a
"normal" pond on the UMAINE campus? - CORRECT ANSWER - bacteria
imagine there is a new species-specific fishing regulation that mandates only adult fish of this
species that are 75 cm or longer may be kept and shorter fish must be released. Based on your
