LS 4.2

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.

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NGSS.MS-LS4-2

Throughout fossil records, many species appearing in lower layers of rock disappear in higher layers of rock. Which best explains their disappearance?

• The species became extinct.

• The species moved to another geographic location.

• The fossil remains were disrupted by an earthquake.

• Environmental conditions were not suitable for fossil formation.

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NGSS.MS-LS4-1

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

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NGSS.MS-LS4-2

Which best supports the idea of continental drift?

• Coastlines are constantly changing shape due to erosion.

• Earthquakes are frequently felt in many regions of the world.

• Glaciers currently exist in areas considered too warm for glaciers to form.

• Fossilized remains of the same plants and animals are found on different continents.

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NGSS.MS-ESS2-3

List the steps of the scientific method

d

e

f

c

b

a

Analyze results

Conduct experiment

Ask a question

Form a hypothesis

Communicate results

Draw conclusions

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

Which best explains why species living in Australia are found nowhere else on Earth?

• Australia has an ecosystem different from any other area on Earth.

• Humans have genetically altered many Australian species in laboratories.

• Australian species were genetically altered after a comet hit the landmass.

• Australia separated from other continents and species there evolved independently.

A new type of plant was discovered on a newly-formed volcanic island. The island is hundreds of miles away from the mainland. Which hypothesis best explains how the plant arrived?

• It spontaneously generated.

• It was carried there by humans.

• It was carried there by wind or waves.

• It was already present in volcanic materials.

Which would provide evidence of lithospheric plate movement over time?

• fossils of tropical plants found near the equator

• fossils of tropical fish found in a warm climate area

• fossils of tropical plants found in a cold climate area

• fossils of tropical fish found at the bottom of an ocean

Tags

NGSS.MS-ESS2-3

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

• plants

• insects

• jellyfish

• bacteria

Tags

NGSS.MS-LS4-1