MS LS4 3

Study of embryos of various organisms to show a common ancestor because of similarities in development

• natural selection

• embryology

• speciation

• evolution

Tags

NGSS.MS-LS4-3

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures

• analogous structures

• homologous structures

• fossil structures

Tags

NGSS.MS-LS4-2

If modern organisms have a lot of homologous structures, what inference might paleontologists make about those organisms?

• They are reptiles

• One organism evolved from the other.

• The organisms have a common ancestor

Tags

NGSS.MS-LS4-2

How do fossils provide evidence that evolution has happened on Earth?

• Fossils show how the sizes of certain animals has changed drastically over millions of years

• Fossils show that some species have gone extinct

• Fossils show how life forms present today are different than those from the past

• Different sedimentary rock layers provide evidence for how the environment has changed over time

Tags

NGSS.MS-LS4-1

List the steps of the scientific method

d

e

f

c

b

a

Form a hypothesis

Conduct experiment

Communicate results

Analyze results

Draw conclusions

Ask a question

Tags

NGSS.MS-LS1-5

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

These forelimbs are considered to be evidence of common ancestry because of which of the following?

• They have the same functions.

• They are all from mammals.

• They contain similar structures.

• They all are all the same basic length.

Tags

NGSS.MS-LS4-2

What does Darwin's theory of evolution suggest?

• species change over time

• extinct species are not related to living species

• different species can interbreed

• animals that look alike are most closely related

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-3

NGSS.MS-LS4-4

Which is not evidence for evolution?

• many animals have homologous structures due to common ancestry

• Many animals have vestigial structures from an ancestor

• We can observe changes in life forms by observing the fossil record

• All of these are evidence for evolution

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What is a structure that is similar across species?

• vestigial

• homologous

• adaptaion

• variation

Tags

NGSS.MS-LS4-2