7.13

When an animal is infected with a virus, the body responds by creating conditions that are not favorable for the virus. It does this by -

• creating a sensation of hunger.

• raising the core body temperature.

• increasing sensitivity to sound.

• inhibiting the sense of balance.

Sometimes bones in the front limbs of animals are very similar in structure. What do we call similar bone structures that indicate a link to a common ancestor?

• Homologous structures

• Gradualism

• Absolute dating

• Adaptations

Tags

NGSS.MS-LS4-2

How are structures that have no current apparent function in an organism, evidence for evolution?

• Organisms with these structures probably share ancestry with organisms in which the same structure is functional.

• Organisms with these structures do not share ancestry with organisms in which the same structure is functional.

• Organisms have developed these structures as defense mechanisms.

• Organisms have developed these structures very recently.

Tags

NGSS.MS-LS4-2

When a DNA sequence is copied, sometimes mistakes occur in the new strand of DNA. What do we call these mistakes?

• Mutations

• Transcription

• Adaptations

• Chargaff's rule

Tags

NGSS.MS-LS3-1

What is likely to happen if a mutation causes a favorable change in an organism, helping to increase its survival?

• The mutation will be passed on to its offspring

• The organism will not be accepted by members of its population

• The mutation will disappear from the organism over time

• The organism will die an early death due to genetic complications

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

The figure shows how the Eohippus horse has changed over time to become the Equus (modern day) horse. What is this chart an example of?

• Evolution

• Extinction

• Trait addition

• Inheritable discussion

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Many animals share homologous structures. Choose all of the statements considered true about these homologous structures and evolution.

• The structures suggest organisms are related in some way.

• Organisms with homologous structures probably evolved from common ancestors.

• The similarity of structures suggests birds, porpoises, and elephants evolved from humans.

• Mutations over time caused these structures to become similar.

Tags

NGSS.MS-LS4-2

On a trip to the mountains, students observed seashells on the top and sides of a cliff. What is the most reasonable explanation for this discovery?

• The rocks that make up this mountain were once under water.

• The seashells were washed ashore during violent storms.

• The seashells were carried to the top of the mountain by the forces of nature.

• People carried the seashells to the top of the mountains.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

On the Galapagos Islands, Darwin observed tortoises with short necks living in damp areas with abundant plant life, and tortoises with longer necks living in dry areas with cacti. What do these observations show about species in different environments?

• Members of a species best suited to an environment survive and reproduce at a higher rate.

• Members of a species overproduce offspring in order to increase their survival rate.

• Members of a species randomly live in different environments.

• Members of a species are not influenced by their environment.

Tags

NGSS.MS-LS1-4

NGSS.MS-LS4-4

How does genetic evidence support evolution?

• through similarities in genes and DNA patterns

• through similarities in physical structures

• through similarities in growth and development

• through similarities in mutations

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4