During the drought of 1977 on the island of Daphne Major, which of the following answers correctly explains why birds with larger beaks had a competitive advantage over other individuals?(1 point)

Question

Responses

These birds were able to smell and locate nesting sites with more accuracy.
These birds were able to smell and locate nesting sites with more accuracy.

These birds were able to hold more water.
These birds were able to hold more water.

Birds with larger beaks were better able to utilize the large seeds.
Birds with larger beaks were better able to utilize the large seeds.

These birds were able to fight off birds with smaller beaks more successfully.

Answer 1

The correct explanation for why birds with larger beaks had a competitive advantage during the drought of 1977 on the island of Daphne Major is:

Birds with larger beaks were better able to utilize the large seeds.

During the drought, food resources became scarce, and larger seeds were among the few available food sources. Birds with larger beaks could more effectively crack open and consume these seeds, giving them a survival advantage over those with smaller beaks.

Answer 2

What evidence is there that the 15 species of finch all evolved from one common ancestor?(1 point)
Responses

DNA analysis shows that their DNA is almost identical with only minor changes.
DNA analysis shows that their DNA is almost identical with only minor changes.

Scientists have been studying them since Darwin in 1835 and have watched them evolve.
Scientists have been studying them since Darwin in 1835 and have watched them evolve.

These 15 species are found nowhere else in the world, and the islands are located close enough to the mainland for birds to migrate.
These 15 species are found nowhere else in the world, and the islands are located close enough to the mainland for birds to migrate.

Observation of all 15 species shows that they look incredibly similar, with minor changes to beak size and shape.
Observation of all 15 species shows that they look incredibly similar, with minor changes to beak size and shape.

Answer 3

The evidence that the 15 species of finch all evolved from one common ancestor is:

DNA analysis shows that their DNA is almost identical with only minor changes.

This genetic similarity supports the idea that these finch species share a common evolutionary ancestor, with diversification occurring over time, primarily influenced by environmental factors and available food sources on the Galápagos Islands.

Answer 4

Which of the following best explains why the Galápagos islands are still used for evolution research today?(1 point)
Responses

The diversity in environments on each island provides many opportunities to study how related organisms have adapted over time.
The diversity in environments on each island provides many opportunities to study how related organisms have adapted over time.

The species diversity on the islands is one of the largest in the world, allowing for many examples of evolution.
The species diversity on the islands is one of the largest in the world, allowing for many examples of evolution.

Most species found on the islands are only found in this geographic area, which allows researchers to easily isolate their studies.
Most species found on the islands are only found in this geographic area, which allows researchers to easily isolate their studies.

The islands are easy to access from the mainland, and the climate is particularly well suited for research all year long.

Answer 5

The best explanation for why the Galápagos Islands are still used for evolution research today is:

The diversity in environments on each island provides many opportunities to study how related organisms have adapted over time.

This variation in habitats allows researchers to observe and study adaptive radiation and the processes of evolution in real-time, providing valuable insights into how species evolve in response to different environmental pressures.

Answer 6

Innate behavior is(1 point)
Responses

instinctual behavior.
instinctual behavior.

conditioned behavior.
conditioned behavior.

learned behavior.
learned behavior.

voluntary behavior.

Answer 7

Innate behavior is:

instinctual behavior.

Innate behaviors are those that are genetically programmed and do not require learning or experience; they are typically performed correctly the first time an organism encounters a particular stimulus.

Answer 8

An example of operant conditioning is(1 point)
Responses

a baby learning to eat with a spoon.
a baby learning to eat with a spoon.

a dog drooling at the sight of a dinner bell.
a dog drooling at the sight of a dinner bell.

birds migrating for the winter.
birds migrating for the winter.

a person turning off an alarm clock in the morning.

Answer 9

An example of operant conditioning is:

a person turning off an alarm clock in the morning.

Operant conditioning involves learning through the consequences of behavior, where an action is influenced by rewards or punishments. In this case, turning off the alarm clock is a behavior that is reinforced by the relief from the noise.