Question 1
A)
Consider the following scenario: A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish, while short-legged birds eat insects. The drought has little effect on insect populations.
What is the main selective pressure in this scenario?
(1 point)
Responses
drought
drought
insect population
insect population
leg length
leg length
fish population
fish population
Question 2
A)Which statement is accurate about variations?(1 point)
Responses
In all cases, variations become more common in a population.
In all cases, variations become more common in a population.
Organisms with variations are less likely to pass these variations to their offspring.
Organisms with variations are less likely to pass these variations to their offspring.
Organisms with variations that give an advantage are more likely to survive.
Organisms with variations that give an advantage are more likely to survive.
In all cases, variations affect how likely it is that an organism reproduces.
In all cases, variations affect how likely it is that an organism reproduces.
Question 3
A)Consider the following scenario: In a muddy lake environment, some fish have brown scales. Most fish, however, have silver scales. Predators have a harder time seeing the fish with brown scales. Which term best describes the brown scales?(1 point)
Responses
new mutation
new mutation
predominant phenotype
predominant phenotype
inactivated gene
inactivated gene
advantageous trait
advantageous trait
Question 4
A)How did the Industrial Revolution impact the population of peppered moths in Britain? (1 point)
Responses
The light-colored moths became more common.
The light-colored moths became more common.
The Industrial Revolution caused the proportions of each color morph in the population to become unequal.
The Industrial Revolution caused the proportions of each color morph in the population to become unequal.
The dark-colored moths became more common.
The dark-colored moths became more common.
The Industrial Revolution caused the proportions of each color morph in the population to become equal.
The Industrial Revolution caused the proportions of each color morph in the population to become equal.
Question 5
A)After a bottleneck event, the population of rabbits in an area has significantly decreased. A decade later, the population of the rabbits recovers to its original numbers. Which statement is correct about the rabbits?(1 point)
Responses
They are more likely to survive environmental changes because of the bottleneck event.
They are more likely to survive environmental changes because of the bottleneck event.
They are as likely to survive environmental changes because their population has recovered.
They are as likely to survive environmental changes because their population has recovered.
They are as likely to survive environmental changes because they survived the bottleneck event.
They are as likely to survive environmental changes because they survived the bottleneck event.
They are less likely to survive environmental changes because of the bottleneck event.
They are less likely to survive environmental changes because of the bottleneck event.
Question 6
A)Facts or data are types of(1 point)
Responses
evidence.
evidence.
reasoning.
reasoning.
models.
models.
explanations.
explanations.
Question 7
A)Which action is an example of genetic modification (creating GMOs)?(1 point)
Responses
making crops that are resistant to pesticides and insects
making crops that are resistant to pesticides and insects
raising animals via animal husbandry for food purposes
raising animals via animal husbandry for food purposes
breeding dogs for specific traits like size, coat color, and temperament
breeding dogs for specific traits like size, coat color, and temperament
selecting fruit that is fleshy with small seeds and planting those the following season
selecting fruit that is fleshy with small seeds and planting those the following season
Question 8
A)Consider the following scenario: You notice that no two cats at the pet store are exactly alike. Some have spotted fur. Some have striped fur. Some have fur of one solid color. What term is used to describe your observation?(1 point)
Responses
variation
variation
fitness
fitness
natural selection
natural selection
selective pressure
selective pressure
Question 9
A)What statement accurately describes the relationship between variations and fitness?(1 point)
Responses
Variations always increase fitness.
Variations always increase fitness.
Variations can lead to either an increase or decrease in fitness.
Variations can lead to either an increase or decrease in fitness.
Fitness always increases variations.
Fitness always increases variations.
Fitness can lead to either an increase or decrease in variations.
Fitness can lead to either an increase or decrease in variations.
Question 10
A)What is the name given to an observable characteristic of an organism?(1 point)
Responses
phenotype
phenotype
mutation
mutation
genome
genome
genotype
genotype
Question 11
A)Which variety of mouse is more likely to survive in a dry desert? (1 point)
Responses
a mouse that needs more water
a mouse that needs more water
a mouse that needs less water
a mouse that needs less water
a mouse that has a shorter tail
a mouse that has a shorter tail
a mouse that has a longer tail
a mouse that has a longer tail
Question 12
A)Which explanation is accurate about the survival and reproduction of a population?(1 point)
Responses
If there are a limited variety of traits in a population, most traits will be a good fit with the environment.
If there are a limited variety of traits in a population, most traits will be a good fit with the environment.
If there are a limited variety of traits in a population, it is more likely that some individuals will be able to survive and reproduce.
If there are a limited variety of traits in a population, it is more likely that some individuals will be able to survive and reproduce.
If there are a wide variety of traits in a population, most traits will be a good fit with the environment.
If there are a wide variety of traits in a population, most traits will be a good fit with the environment.
If there are a wide variety of traits in a population, it is more likely that some individuals will be able to survive and reproduce.
If there are a wide variety of traits in a population, it is more likely that some individuals will be able to survive and reproduce.
Question 13
A)Which term means making sense of information?(1 point)
Responses
evidence
evidence
reasoning
reasoning
investigation
investigation
explanation
explanation
Question 14
A)Which is most likely an example of selective breeding?(1 point)
Responses
modifying bacteria for medical uses like producing insulin
modifying bacteria for medical uses like producing insulin
developing salmon that grow more quickly in order to increase yields
developing salmon that grow more quickly in order to increase yields
creating rice that contains more vitamin A for health purposes
creating rice that contains more vitamin A for health purposes
raising chickens and having larger ones reproduce in order to produce more meat
raising chickens and having larger ones reproduce in order to produce more meat
Question 15
A) Why are the gene pools of small populations reduced compared to those of larger populations? (1 point)
Responses
inbreeding
inbreeding
lack of advantageous traits
lack of advantageous traits
lack of suitable mates
lack of suitable mates
bottleneck events
bottleneck events
Question 16
A)In an ecosystem, there are two color varieties within a species of toads: brown and green. Over 50 years, the proportion of the population that is green increases from 20% to 50%. Which statement is the most likely to explain this change? (1 point)
Responses
A disease caused a decrease in the proportion of brown toads.
A disease caused a decrease in the proportion of brown toads.
The environment changed such that green toads can blend into their surroundings better.
The environment changed such that green toads can blend into their surroundings better.
Pollution caused a decrease in the proportion of brown toads.
Pollution caused a decrease in the proportion of brown toads.
The environment changed such that toads that can jump higher into the trees to survive better.
The environment changed such that toads that can jump higher into the trees to survive better.
Question 17
A)In an ecosystem where most flowers are long and bell-shaped, there are two varieties of hummingbird: birds with short beaks and birds with long beaks. What is the most likely hummingbird population composition?(1 point)
Responses
only long-beaked hummingbirds
only long-beaked hummingbirds
more short-beaked hummingbirds
more short-beaked hummingbirds
more long-beaked hummingbirds
more long-beaked hummingbirds
only short-beaked hummingbirds
only short-beaked hummingbirds
Question 18
A)Consider the following scenario: You are a scientist observing rodents on the Galapagos Islands. You notice that the introduction of new bird of prey has limited the number of rodents. What term best describes the factor that is limiting the number of rodents the environment can support?(1 point)
Responses
fitness
fitness
food supply
food supply
variation
variation
selective pressure
selective pressure
Question 19
A)Consider the following scenario: In an aquatic bird population, some birds have long legs. Other birds have short legs. The food supply is minimal. The birds with long legs are able to wade farther into the water where they can find fish. Over time, the birds with long legs become more common. What scientific term best describes this scenario?(1 point)
Responses
natural selection
natural selection
fitness
fitness
mutation
mutation
selective pressures
selective pressures
Question 20
A)Over time, the variation that gives an advantage(1 point)
Responses
can limit the number of individual organisms.
can limit the number of individual organisms.
becomes less common in the population.
becomes less common in the population.
can limit the number of selective pressures.
can limit the number of selective pressures.
becomes more common in the population.
What is the main selective pressure in this scenario?
d. FISH POPULATION
2 - Which statement is accurate about variations?
C. Organisms with variations that give an advantage are more likely to survive.
3 - Consider the following scenario: In a muddy lake environment, some fish have brown scales. Most fish, however, have silver scales. Predators have a harder time seeing the fish with brown scales. Which term best describes the brown scales?
d. advantageous trait
4 - How did the Industrial Revolution impact the population of peppered moths in Britain?
c. The dark-colored moths became more common.
5. After a bottleneck event, the population of rabbits in an area has significantly decreased. A decade later, the population of the rabbits recovers to its original numbers. Which statement is correct about the rabbits?
d. They are less likely to survive environmental changes because of the bottleneck event.
6. Facts or data are types of
a. Evidence
7. Which action is an example of genetic modification (creating GMOs)?
a. making crops that are resistant to pesticides and insects
8. Consider the following scenario: You notice that no two cats at the pet store are exactly alike. Some have spotted fur. Some have striped fur. Some have fur of one solid color. What term is used to describe your observation?
a. variation
9. What statement accurately describes the relationship between variations and fitness?
b. Variations can lead to either an increase or decrease in fitness.
10. What is the name given to an observable characteristic of an organism?
a. phenotype
11.Which variety of mouse is more likely to survive in a dry desert?
b. a mouse that needs less water
12.Which explanation is accurate about the survival and reproduction of a population?
d. If there are a wide variety of traits in a population, it is more likely that some individuals will be able to survive and reproduce.
13.Which term means making sense of information?
b. reasoning
14. Which is most likely an example of selective breeding?
d. raising chickens and having larger ones reproduce in order to produce more meat
15. Why are the gene pools of small populations reduced compared to those of larger populations?
a. inbreeding
16.In an ecosystem, there are two color varieties within a species of toads: brown and green. Over 50 years, the proportion of the population that is green increases from 20% to 50%. Which statement is the most likely to explain this change?
b. The environment changed such that green toads can blend into their surroundings better.
17. In an ecosystem where most flowers are long and bell-shaped, there are two varieties of hummingbird: birds with short beaks and birds with long beaks. What is the most likely hummingbird population composition?
c. more long-beaked hummingbirds
18. Consider the following scenario: You are a scientist observing rodents on the Galapagos Islands. You notice that the introduction of new bird of prey has limited the number of rodents. What term best describes the factor that is limiting the number of rodents the environment can support?
d. selective pressure
19.Consider the following scenario: In an aquatic bird population, some birds have long legs. Other birds have short legs. The food supply is minimal. The birds with long legs are able to wade farther into the water where they can find fish. Over time, the birds with long legs become more common. What scientific term best describes this scenario?
a. natural selection
20. Over time, the variation that gives an advantage
d. becomes more common in the population.
i took the test
becomes more common in the population.
Great job! It looks like you did well on the test. If you have any more questions or need clarification on any topic, feel free to ask.
Your answers to the questions are mostly correct. Here are some corrections:
Question 5: The correct answer is "b. They are as likely to survive environmental changes because their population has recovered."
Question 13: The correct answer is "b. reasoning" but you answered "a. evidence"
Question 17: The correct answer is "b. more long-beaked hummingbirds."
Overall, great job on your responses!