History of Evolution Oncours Review

a more recent species that evolved from an ancestor population

• paleontologist

• descedant species

• evolution

• speciation

Tags

NGSS.MS-LS4-2

the process by which species adapt to environmental changes over a very long time

• evolution

• paleontologist

• shared structure

• speciation

Tags

NGSS.MS-LS4-4

a scientist that studies fossils

• descendant species

• evolution

• paleontologist

• speciation

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

the process by which on population evolves into two or more different species

• stability

• fossil

• speciation

• evolution

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

when something stays mostly the same over time

• paleontologist

• shared structure

• speciation

• stability

an older population from which two or more newer species descended from

• stability

• fossil

• Lebron

• common ancestor population

Tags

NGSS.MS-LS4-2

evidence of life from the past, such as fossilized bones, footprints, or leaf prints

• fossils

• evolution

• stability

• CAP

Tags

NGSS.MS-LS4-1

10. 10. This octopus and this surf clam both have a body structure called a mantle, which covers their soft bodies. However, the mantle is shaped differently in the two species. The octopus’s mantle has muscles that help the octopus swim. The surf clam’s mantle helps the clam build its shell. What most likely explains why both the octopus and surf clam have mantles and why the mantles are different?

• All species have their own specific body structures, so it is a coincidence that the octopus and surf clam each happen to have mantle structures that are different.

• The octopus and surf clam are different species, so they do not share an ancestor population. These species had separate ancestor populations, and each evolved a mantle that helps it survive in its environment.  

• It is impossible to explain the body structures of different species. The way that structures change over time is very complex, and no one has ever observed these changes occurring.

• The octopus and surf clam both inherited the mantle structure from a shared ancestor population, but this population separated into different environments. In each environment, different types of mantle evolved, which helped the populations survive.

Tags

NGSS.MS-LS4-2

This echidna, this natterjack toad, and this blue tang have similarities and differences in their body structures. What does the information about these structures tell you about the ancestors of these species?

• We cannot make observations of ancestor populations from the past. It is impossible to explain ancestors with only the information about the body structures of different species.

• None share an ancestor population because different species cannot share an ancestor population. It is a coincidence that these species have some of the same body structures.

• All three species share an ancestor population, but echidnas and natterjack toads share a more recent ancestor population. This is why they share the neck-bone structure.

• Echidnas and natterjack toads share an ancestor population, but they must not share an ancestor with the blue tang because blue tangs have no neck bones.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What does this diagram show?

• All three species share a common ancestor, but the bold jumping spider and Bombay locust are more closely related to each other than they are to the common octopus.

• All three species share a common ancestor, but the bold jumping spider and common octopus are more closely related to each other than they are to the Bombay locust.

• The three species are not related and come from separate lines of evolutionary history.

• All three species share a common ancestor and are equally related to one another.

Tags

NGSS.MS-LS4-2