Evidence of Ancestral Relationships

Some scientists think that all life evolved from a common ancestor. Which provides evidence that this may be true?

• analogous structures of organisms

• homologous structures of organisms

• extinction of many varieties of plant species

• existence of many varieties of bacteria species

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Two organisms have homologous structures. Which can most likely be concluded about the two organisms?

• They are unrelated.

• They are the same organism.

• They share a common ancestor.

• They evolved in a similar environment.

Tags

NGSS.MS-LS4-2

It is possible to hypothesize how a particular group of organisms evolved by arranging fossils in a chronological sequence. Where would the oldest fossils be found?

• the deepest rock layer

• the most shallow rock layer

• the rock layer with the greatest variety of fossils

• the rock layer containing fossils with the most complex structures

Tags

NGSS.MS-LS4-1

Which organisms are most closely related based on comparison of anatomical structures?

• jellyfish and clam

• snake and worm

• pig and human

• bid and bee

Tags

NGSS.MS-LS4-2

Select all the images that provide evidence for common ancestry.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

NGSS.MS-LS4-3

Given the similarities of the these organisms early in their developments, this would be evidence for which statement?

• They are not related

• They are very closely related

• They share a common ancestor

• This diagram tells us nothing

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Which fossil shows a skull for an organism that is most likely the ancestor for the organisms selected in the previous question?

• a

• b

• c

• d

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

Which best helps scientists explore the relationship between modern organisms and ancestral species to create a system of biological classification?

• volcanic ash

• fossils

• DNA evidence

• igneous rock layers

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

Which is true about fossils?

• Fossils provide the evidence for the Law of Gravity.

• Fossils provide the evidence for the Laws of Motion.

• Fossils provide the evidence for the Theory of Evolution.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

Based on the fossil record, which organisms were most likely to have existed first?

• plants

• insects

• jellyfish

• bacteria

Tags

NGSS.MS-LS4-1