Theory of Evolution STAAR Review

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

• natural selection

• embryology

• speciation

• evolution

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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

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NGSS.MS-LS4-2

The diagram illustrates an embryonic stage of two organisms.

Which of the following can be determined by observing the embryos shown in the diagram

• The organisms share a common ancestry.

• The organisms belong to the same genus.

• The organisms are native to the same geographic areas.

• The organisms will grow into anatomically similar adults.

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NGSS.MS-LS4-2

NGSS.MS-LS4-3

The picture shows a/an ___________

• homologous structure

• vestigial structure

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NGSS.MS-LS4-2

What best describes the hind leg bones seen in the whale?

• The bones are analogous structures to the fins of living fish.

• The bones are vestigial structures that had a function in an ancestor.

• The bones are homologous structures to the wings of butterflies.

• The bones are fossil structures from an extinct ancestor.

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NGSS.MS-LS4-1

NGSS.MS-LS4-2

If two organisms have similar traits of DNA they are probably

• share a common ancestor

• share a common environment

• share a common population

• speciation

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NGSS.MS-LS4-2

Mutations are important because they bring about

• death of the organism in which they develop

• genetic variation needed for a population to evolve

• benefits for the individual, not for the population

• Hardey-Weinberg equilibrium within a population

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NGSS.MS-LS3-1

NGSS.MS-LS4-4

A grizzly bear survives because he is well-adapted to his environment. When he reproduces he passes on those traits to his offspring. this process is called

• Natural Selection

• Selective Breeding

• Random mutations

• Variations in a species

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NGSS.MS-LS1-4

NGSS.MS-LS4-4

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

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NGSS.MS-LS4-1

Which layer is the youngest

• 1

• 2

• 3

• 4

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NGSS.MS-ESS1-4