Question 8 (1 point)
How did the Industrial Revolution impact the population of peppered moths in Britain?
a
The light-colored moths became more common.
b
The Industrial Revolution caused the proportions of each color morph in the population to become unequal
c
The dark-colored moths became more common.
d
The Industrial Revolution caused the proportions of each color morph in the population to become equal.
Question 9 (1 point)
Which explanation is accurate about the survival and reproduction of a population?
a
If there are a limited variety of traits in a population, most traits will be a good fit with the environment.
b
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.
c
If there are a wide variety of traits in a population, most traits will be a good fit with the environment.
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.
Question 10 (1 point)
Which statement is accurate about variations?
a
In all cases, variations become more common in a population.
b
Organisms with variations are less likely to pass these variations to their offspring.
c
Organisms with variations that give an advantage are more likely to survive.
d
In all cases, variations affect how likely it is that an organism reproduces.
c
Organisms with variations that give an advantage are more likely to survive.
Which explanation is accurate about the survival and reproduction of a population?
a
If there are a limited variety of traits in a population, most traits will be a good fit with the environment.
b
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.
c
If there are a wide variety of traits in a population, most traits will be a good fit with the environment.
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.
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.
How did the Industrial Revolution impact the population of peppered moths in Britain?
a
The light-colored moths became more common.
b
The Industrial Revolution caused the proportions of each color morph in the population to become unequal
c
The dark-colored moths became more common.
d
The Industrial Revolution caused the proportions of each color morph in the population to become equal.
c
The dark-colored moths became more common.
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. Drought has little effect on insect populations.
What is the main selective pressure in this scenario?
a
drought
b
insect population
c
leg length
d
fish population
d
fish population
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
b
fitness
c
natural selection
d
selective pressure
a
variation
Which variety of mouse is more likely to survive in a dry desert?
a
a mouse that needs more water
b
a mouse that needs less water
c
a mouse that has a shorter tail
d
a mouse that has a longer tail