Copy of Copy of Friday (02/14) - Natural Selection Quiz 2025 (1/9/2026) (5/2/2026)

Last updated about 3 hours ago

16 Nsɛmmisa

Ɛhia

B.C.7E

Ɛhia

B.C.7C

Ɛhia

B.C.7E

Ɛhia

BIO.7.D

Ɛhia

B.C.7E

Ɛhia

B.C.7E

Ɛhia

B.C.7E

Ɛhia

B.C.7E

Ɛhia

B.C.7F

Copy of Copy of Friday (02/14) - Natural Selection Quiz 2025 (1/9/2026) (5/2/2026)

Last updated about 3 hours ago

16 Nsɛmmisa

Ɛhia

LOW
Match the term to the correct definition:

Draggable item		Corresponding Item
Fitness		Differences among each individual within a population
Natural Selection		The ability to survive, reproduce, and pass down genes
Variation		The mechanism of evolution where the best adapted individuals survive and reproduce, contributing the most to the next generation (also known as "survival of the fittest")

Ɛhia

LOW

Enter your answer in the box:

A heritable trait that increases an organism’s ability to survive and reproduce in its specific environment is called an .

B.C.7E

Ɛhia

MED - STAAR 2019
Male guppies found in areas without predators are more colorful than the ones found in locations with large predator populations. A population of adult guppies originating from an area with a large number of predators is transferred to a nearby area with few predators.
Which of these is most likely to happen over a few generations?

The mortality rate of the guppies will increase.

Offspring will stop competing for resources.

There will be an increase in mutations in the offspring.

There will be an increase in the number of colorful guppies.

B.C.7C

Ɛhia

MED - STAAR 2021
Farmers spray pesticides (poison) on their plants to protect the plants from being eaten by insects.
Some individual insects have a genetic mutation that makes them resistant to the poison in the pesticides. This means that the resistant insects survive while the others die.
Which statement best describes how only a few resistant individuals resulted in the pesticide becoming ineffective (stopped it from working).

The resistant insects eat the poisonous plants and leave the rest of the plants for the others

The resistant insects grow larger and eat less of the plants

The resistant insects are able to survive to reproduce and create a population that is also resistant

The resistant insects change the toxins on the plants, making them safe for others

B.C.7E

Ɛhia

HIGH - STAAR 2024
The bar graph shows the average neck length in a population of giraffes. The data were collected in 1980 and 1983, after a wildfire occurred in 1982 in the area.
Which factor BEST describes the change in this population of giraffes?

An increase in food availability

A decrease in fitness that increased reproductive success

A change in the phenotypic distribution in response to an environmental factor

A change in the survival rate of one giraffe

Ɛhia

HIGH - STAAR 2023
The figure shows fossilized and living stalk-eyed flies from the family Diopsidae. In fossils, the eye spans of the flies are much smaller than those of living flies.
Which question would BEST help determine whether the change in eye span in stalk-eyed flies influenced by natural selection?

Is the eye span of male stalk-eyed flies similar to that of female flies?

Do fossilized stalk-eyed flies have a shorter body length than living flies?

What is the relationship between body length and eye span of stalk-eyed flies?

How does the eye span of stalk-eyed flies compare from one generation to the next?

BIO.7.D

Ɛhia

MED
The table shows the survival rate of two types of rabbits in the same environment over a period of four years.

Which statement about the rabbits in this environment is best supported by the data?

White rabbits are more fit for the environment than brown rabbits are.

White rabbits are less fit for the environment than brown rabbits are.

Brown rabbits have a shorter life cycle than white rabbits have.

Brown rabbits are more fit for the environment than white rabbits are.

B.C.7E

Ɛhia

LOW - STAAR 2021
The giant octopus lays 20,000 to 100,000 eggs. After hatching, most octopuses become prey to larger marine organisms, and less than 5% will reach adulthood.
One benefit of the giant octopus laying many eggs is to __________________________.

decrease competition between different octopus species to maintain resources in the population

decrease the likelihood of offspring being cosumed by predators

increase the chance that more individuals will survive to maintain the population

increase the average body size for surviving individuals to avoid predation

B.C.7E

Ɛhia

LOW
Green anoles are lizards that can change their skin color rapidly in response to various stimuli. This adaptation is the result of --

beneficial traits passed from parents to offspring.

environmental pollutants that changed their genotype.

geographical isolation that prevented genetic mutation.

selective breeding of lizards by humans.

B.C.7E

Ɛhia

MED
Nudibranchs are marine worms that do not have shells. Many of these worms release a foul-tasting poison when threatened. The bright coloration of the nudibranchs warns predators to avoid them.
Based on this information, how has adaptation through natural selection allowed nudibranchs to be successful without a shell?

They blend in with their environment to hide from predators.

They have bright colors to attract mates.

They find enough food as they move through the salt water.

They are not attacked by most predators and are able to reproduce successfully.

B.C.7E

Ɛhia

HIGH - STAAR 2024
During the Industrial Revolution in England, burning coal increased the soot level in the air, and the soot darkened the tree bark. As a result, the population of dark-colored peppered moths significantly increased.
Which statement describes the MOST LIKELY reason why the population of dark-colored peppered moths increased?

Light-colored peppered moths were better adapted than dark-colored peppered moths.

Changes to the peppered moths' diet caused an increase of pigment that led to a darker color.

Dark-colored peppered moths had a genetic variation that provided better coverage from predators in their changing environment.

Light-colored peppered moths migrated to areas with less pollution.

Ɛhia

MED
Staphylococcus aureus is a species of bacteria that is highly resistant to antibiotic drugs. While these bacteria typically replicate asexually through a process known as binary fission, they can also acquire new genes by incorporating plasmids (circular segments of DNA) from other bacteria in their environment. Certain bacteria contain plasmids that carry genes that provide resistance to antibiotics.
How does the ability to exchange DNA with other bacteria help Staphylococcus aureus survive in changing environments?

It increases genetic diversity, which increases their ability to survive in changing conditions.

It creates identical copies of the bacteria, maintaining uniformity and ensuring no mutations form.

It eliminates harmful genes from bacterial populations, making them harder to detect from antibiotics.

It forces bacteria to rely on a single source of nutrients, which prevents other species from outcompeting them.

Ɛhia

MED - STAAR 2024 (10D)
As part of a wildlife conservation program, researches take a small population of wolves and relocate them to an island. After several generations, researchers analyze the genomes of the wolves in the population and determine that there is little genetic variation in the population.
Which evolutionary mechanism BEST explains the low level of genetic variation of these wolves?

Mutation

Gene flow

Recombination

Founder effect

In Willowbend Grove, 50% of the rabbits are black and 50% are white. A fire starts and kills almost all of the rabbits. In the surviving population, 90% of the rabbits are black and 10% are white.

null

Ɛhia

MED

The change in allele frequencies after the fire is an example of

Ɛhia

LOW
Evolution is a gradual change in species over many generations. There are several mechanisms which contribute to these observed changes.
Which mechanisms increase genetic diversity in populations? Select THREE correct answers.

Ɛhia

MED
Common baboons live on the same savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop.
Which of these is a likely outcome of movement by young males?

Gene flow occurs between populations

Intermediate phenotypes increase in the species

Allele frequencies suddenly change

Relative genotypic frequencies reach a constant state

B.C.7F

Copy of Copy of Friday (02/14) - Natural Selection Quiz 2025 (1/9/2026) (5/2/2026)

Copy of Copy of Friday (02/14) - Natural Selection Quiz 2025 (1/9/2026) (5/2/2026)

LOWMatch the term to the correct definition:

HIGH - STAAR 2024The bar graph shows the average neck length in a population of giraffes. The data were collected in 1980 and 1983, after a wildfire occurred in 1982 in the area. Which factor BEST describes the change in this population of giraffes?

MEDThe table shows the survival rate of two types of rabbits in the same environment over a period of four years. Which statement about the rabbits in this environment is best supported by the data?

LOW - STAAR 2021The giant octopus lays 20,000 to 100,000 eggs. After hatching, most octopuses become prey to larger marine organisms, and less than 5% will reach adulthood. One benefit of the giant octopus laying many eggs is to __________________________.

LOWGreen anoles are lizards that can change their skin color rapidly in response to various stimuli. This adaptation is the result of --

In Willowbend Grove, 50% of the rabbits are black and 50% are white. A fire starts and kills almost all of the rabbits. In the surviving population, 90% of the rabbits are black and 10% are white.

LOWEvolution is a gradual change in species over many generations. There are several mechanisms which contribute to these observed changes.Which mechanisms increase genetic diversity in populations? Select THREE correct answers.

MEDCommon baboons live on the same savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop.Which of these is a likely outcome of movement by young males?

LOWMatch the term to the correct definition:

HIGH - STAAR 2024The bar graph shows the average neck length in a population of giraffes. The data were collected in 1980 and 1983, after a wildfire occurred in 1982 in the area. Which factor BEST describes the change in this population of giraffes?

MEDThe table shows the survival rate of two types of rabbits in the same environment over a period of four years. Which statement about the rabbits in this environment is best supported by the data?

LOW - STAAR 2021The giant octopus lays 20,000 to 100,000 eggs. After hatching, most octopuses become prey to larger marine organisms, and less than 5% will reach adulthood. One benefit of the giant octopus laying many eggs is to __________________________.

LOWGreen anoles are lizards that can change their skin color rapidly in response to various stimuli. This adaptation is the result of --

In Willowbend Grove, 50% of the rabbits are black and 50% are white. A fire starts and kills almost all of the rabbits. In the surviving population, 90% of the rabbits are black and 10% are white.

LOWEvolution is a gradual change in species over many generations. There are several mechanisms which contribute to these observed changes.Which mechanisms increase genetic diversity in populations? Select THREE correct answers.

MEDCommon baboons live on the same savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop.Which of these is a likely outcome of movement by young males?

LOW
Match the term to the correct definition:

HIGH - STAAR 2024
The bar graph shows the average neck length in a population of giraffes. The data were collected in 1980 and 1983, after a wildfire occurred in 1982 in the area.
Which factor BEST describes the change in this population of giraffes?

MED
The table shows the survival rate of two types of rabbits in the same environment over a period of four years.

Which statement about the rabbits in this environment is best supported by the data?

LOW - STAAR 2021
The giant octopus lays 20,000 to 100,000 eggs. After hatching, most octopuses become prey to larger marine organisms, and less than 5% will reach adulthood.
One benefit of the giant octopus laying many eggs is to __________________________.

LOW
Green anoles are lizards that can change their skin color rapidly in response to various stimuli. This adaptation is the result of --

LOW
Evolution is a gradual change in species over many generations. There are several mechanisms which contribute to these observed changes.
Which mechanisms increase genetic diversity in populations? Select THREE correct answers.

MED
Common baboons live on the same savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop.
Which of these is a likely outcome of movement by young males?

LOW
Match the term to the correct definition:

HIGH - STAAR 2024
The bar graph shows the average neck length in a population of giraffes. The data were collected in 1980 and 1983, after a wildfire occurred in 1982 in the area.
Which factor BEST describes the change in this population of giraffes?

MED
The table shows the survival rate of two types of rabbits in the same environment over a period of four years.

Which statement about the rabbits in this environment is best supported by the data?

LOW - STAAR 2021
The giant octopus lays 20,000 to 100,000 eggs. After hatching, most octopuses become prey to larger marine organisms, and less than 5% will reach adulthood.
One benefit of the giant octopus laying many eggs is to __________________________.

LOW
Green anoles are lizards that can change their skin color rapidly in response to various stimuli. This adaptation is the result of --

LOW
Evolution is a gradual change in species over many generations. There are several mechanisms which contribute to these observed changes.
Which mechanisms increase genetic diversity in populations? Select THREE correct answers.

MED
Common baboons live on the same savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop.
Which of these is a likely outcome of movement by young males?