Biology 301 Exam Questions and Verified Answers/Accurate Solutions| New
Update Already Graded A+
Which level of ecological hierarchy includes the movement of water and air? Biosphere
Which is the correct hierarchy of ecological systems, starting at the most fundamental unit?
individual, population, community, ecosystem, biosphere
In evolution by natural selection, which of the following is true? 1) Individuals have varied
traits
2) Some individuals have higher fitness because of their traits
To maintain a dynamic steady state in a community, which two factors must balance? New
species and species extinctions
The seeds of burdock plants have developed curved spines that are able to attach to the fur of a
fox so that they may be dispersed throughout various regions without hurting the fox at all. The
relationship between a burdock plant and a fox is... Commensalism
An ecologist who studies population would most likely be interested in birth and deaths of
individuals belonging to a particular species in a perticular place
Organisms that use photosynthesis or chemosynthesis are autotrophs
Water has a _____ specific heat, is most dense at ______ degrees celsius, and is a powerful
solvent because it is _____ which allows for the attraction of ions. High
4
Polar
Water in most streams and rivers is typically at a pH of 7 which is considered neutral
,The dissolved oxygen levels in water did NOT require adaptation for dolphins
Many marine organisms have streamlined bodies as an adaptation to water's high viscosity
A dormouse retreats to its den and lowers its metabolic rate on cold evenings. It becomes
extremely difficult to wake until the temperature increases the next day. This type of dormancy
is called Torpor
Which is NOT an adaptation to low-oxygen aquatic environments? Decreased metabolic
activity
Certain membranes only allow particular molecules to pass through thereby reducing the free
movement of solutes. These are called ______________ membranes. Semipermeable
Shown above is a depiction of a sugar glider and a North American flying squirrel. Both have
adapted very similar physical means of accomplishing aerian locomotion although they are not
endogenous to the same area and do not share a recent common ancestor. The phenomenon
that causes these two species to look similar because they were subject to similar selective
forces is known as Convergent Evolution
Bases on the central-place foraging theory and the figure above, identify the optimal number of
prey for a forager to catch 8 prey
Which genotype(s) exhibit(s) phenotypic plasticity in response to predators? *(Predator/Pray
Bar Graph Test 1)* O Only
Which genotype(s) would have the highest average fitness across both environments?
*(Predator/Pray Bar Graph Test 1)* O only
, Under which of the following situations would the plastic genotype be favored over other
genotypes?*(Predator/Pray Bar Graph Test 1)*
1) If all environments have predators
2) If no environments have predators
3) if environments with predators are as common as environments without predators If
environments with predators are as common as environments without predators
The action of internal response mechanisms that restores a system to a desired state, or set
point, when the system deviates from that state is called negative feedback
In response to a specific type of environmental variation, the burmese python can drastically
increase the size of its heart and length of its intestines in less than 2 days. What environmental
variation causes this drastic change? Variation in availability of food
White hares have higher fitness compared to brown hares in environments that are covered in
snow. Brown hares have higher fitness that white hares in forests. This is an example of...
Phenotypic Trade off
Desert tortoises shut down metabolic processes for long periods during very hot and dry
summer conditions. What form of dormancy is this? Aestivation
Phenotypic plasticity is... is the ability of a single genotype to produce multiple phenotypes
Upwelling causes... nutrient rich zones
Which of the following has the highest albedo Snow
Which of the following phenomena triggers an El Nino Southern Oscillation event?
Oscillation of trade winds in the equatorial central pacific ocean
Update Already Graded A+
Which level of ecological hierarchy includes the movement of water and air? Biosphere
Which is the correct hierarchy of ecological systems, starting at the most fundamental unit?
individual, population, community, ecosystem, biosphere
In evolution by natural selection, which of the following is true? 1) Individuals have varied
traits
2) Some individuals have higher fitness because of their traits
To maintain a dynamic steady state in a community, which two factors must balance? New
species and species extinctions
The seeds of burdock plants have developed curved spines that are able to attach to the fur of a
fox so that they may be dispersed throughout various regions without hurting the fox at all. The
relationship between a burdock plant and a fox is... Commensalism
An ecologist who studies population would most likely be interested in birth and deaths of
individuals belonging to a particular species in a perticular place
Organisms that use photosynthesis or chemosynthesis are autotrophs
Water has a _____ specific heat, is most dense at ______ degrees celsius, and is a powerful
solvent because it is _____ which allows for the attraction of ions. High
4
Polar
Water in most streams and rivers is typically at a pH of 7 which is considered neutral
,The dissolved oxygen levels in water did NOT require adaptation for dolphins
Many marine organisms have streamlined bodies as an adaptation to water's high viscosity
A dormouse retreats to its den and lowers its metabolic rate on cold evenings. It becomes
extremely difficult to wake until the temperature increases the next day. This type of dormancy
is called Torpor
Which is NOT an adaptation to low-oxygen aquatic environments? Decreased metabolic
activity
Certain membranes only allow particular molecules to pass through thereby reducing the free
movement of solutes. These are called ______________ membranes. Semipermeable
Shown above is a depiction of a sugar glider and a North American flying squirrel. Both have
adapted very similar physical means of accomplishing aerian locomotion although they are not
endogenous to the same area and do not share a recent common ancestor. The phenomenon
that causes these two species to look similar because they were subject to similar selective
forces is known as Convergent Evolution
Bases on the central-place foraging theory and the figure above, identify the optimal number of
prey for a forager to catch 8 prey
Which genotype(s) exhibit(s) phenotypic plasticity in response to predators? *(Predator/Pray
Bar Graph Test 1)* O Only
Which genotype(s) would have the highest average fitness across both environments?
*(Predator/Pray Bar Graph Test 1)* O only
, Under which of the following situations would the plastic genotype be favored over other
genotypes?*(Predator/Pray Bar Graph Test 1)*
1) If all environments have predators
2) If no environments have predators
3) if environments with predators are as common as environments without predators If
environments with predators are as common as environments without predators
The action of internal response mechanisms that restores a system to a desired state, or set
point, when the system deviates from that state is called negative feedback
In response to a specific type of environmental variation, the burmese python can drastically
increase the size of its heart and length of its intestines in less than 2 days. What environmental
variation causes this drastic change? Variation in availability of food
White hares have higher fitness compared to brown hares in environments that are covered in
snow. Brown hares have higher fitness that white hares in forests. This is an example of...
Phenotypic Trade off
Desert tortoises shut down metabolic processes for long periods during very hot and dry
summer conditions. What form of dormancy is this? Aestivation
Phenotypic plasticity is... is the ability of a single genotype to produce multiple phenotypes
Upwelling causes... nutrient rich zones
Which of the following has the highest albedo Snow
Which of the following phenomena triggers an El Nino Southern Oscillation event?
Oscillation of trade winds in the equatorial central pacific ocean
