Question 1

Question

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)
drought
insect population
leg length
fish population
Question 2
A) Which statement is accurate about variations? (1 point)
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 that give an advantage are more likely to survive.
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)
new mutation
predominant phenotype
inactivated gene
advantageous trait
Question 4
A) How did the Industrial Revolution impact the population of peppered moths in Britain?
(1 point)
The light
colored moths became more common.
The Industrial Revolution caused the proportions of each color morph in the population to
become unequal.
The dark
colored moths became more common.
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)
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 they survived 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)
evidence.
reasoning.
models.
explanations.
Question 7
A) Which action is an example of genetic modification
(
creating GMOs
)
? (1 point)
making crops that are resistant to pesticides and insects
raising animals via animal husbandry for food purposes
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
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)
variation
fitness
natural selection
selective pressure
Question 9
A) What statement accurately describes the relationship between variations and fitness?
(1 point)
Variations always increase fitness.
Variations can lead to either an increase or decrease in fitness.
Fitness always increases 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)
phenotype
mutation
genome
genotype
Question 11
A) Which variety of mouse is more likely to survive in a dry desert? (1 point)
a mouse that needs more water
a mouse that needs less water
a mouse that has a shorter 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)
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 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.
Question 13
A) Which term means making sense of information? (1 point)
evidence
reasoning
investigation
explanation
Question 14
A) Which is most likely an example of selective breeding? (1 point)
modifying bacteria for medical uses like producing insulin
developing salmon that grow more quickly in order to increase yields
creating rice that contains more vitamin A for health purposes
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)
inbreeding
lack of advantageous traits
lack of suitable mates
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)
A disease caused a decrease in the proportion of brown toads.
The environment changed such that green toads can blend into their surroundings better.
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.
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)
only long
beaked hummingbirds
more short
beaked hummingbirds
more long
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)
fitness
food supply
variation
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)
natural selection
fitness
mutation
selective pressures
Question 20
A) Over time, the variation that gives an advantage (1 point)
can limit the number of individual organisms.
becomes less common in the population.
can limit the number of selective pressures.
becomes more common in the population

Answer 1

Here are the answers to your questions based on the biological concepts related to evolution, natural selection, and genetics:

Question 1: The main selective pressure in this scenario is fish population.

Question 2: An accurate statement about variations is Organisms with variations that give an advantage are more likely to survive.

Question 3: The term that best describes the brown scales is advantageous trait.

Question 4: The accurate impact of the Industrial Revolution on the population of peppered moths in Britain is The dark colored moths became more common.

Question 5: The statement about the rabbits is They are less likely to survive environmental changes because of the bottleneck event.

Question 6: Facts or data are types of evidence.

Question 7: An example of genetic modification (creating GMOs) is making crops that are resistant to pesticides and insects.

Question 8: The term used to describe your observation is variation.

Question 9: The statement that accurately describes the relationship between variations and fitness is Variations can lead to either an increase or decrease in fitness.

Question 10: The name given to an observable characteristic of an organism is phenotype.

Question 11: The variety of mouse that is more likely to survive in a dry desert is a mouse that needs less water.

Question 12: The accurate explanation about the survival and reproduction of a population is 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: The term that means making sense of information is reasoning.

Question 14: The most likely example of selective breeding is raising chickens and having larger ones reproduce in order to produce more meat.

Question 15: The gene pools of small populations are reduced compared to those of larger populations due to inbreeding.

Question 16: The most likely explanation for the change in the toad population is The environment changed such that green toads can blend into their surroundings better.

Question 17: The most likely hummingbird population composition is more long-beaked hummingbirds.

Question 18: The term that best describes the factor limiting the number of rodents is selective pressure.

Question 19: The scientific term that best describes this scenario is natural selection.

Question 20: Over time, the variation that gives an advantage becomes more common in the population.

Feel free to ask if you have more questions or need further explanations!