Fossil Record Review Mr Graig Vann

Which of these answer BEST describes a fossil?

• fossils are remains or traces of once-living organisms found in layers of rock or ice, or in amber.

• organism from which other organisms are descended.

• body of an organism that died recently but has not decomposed

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NGSS.MS-LS4-1

Jonah's science class is examining different rocks. Jonah finds the rock shown below. What can Jonah see on this rock?

• DNA

• Fossil

• organism that died recently

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NGSS.MS-LS4-1

Juan is studying fossils. His teacher wrote the following statements on the board and asked the students to put them in the correct order to describe how fossils are formed.

1.Minerals seep into the organism's body and replace it with stone. 2. The organism completely decomposes, leaving behind an imprint. 3.An organism dies and its body is covered with a layer of sediment. 4.Time passes, and sediment layers continue to build up on the organism.

• 3, 4, 1, 2

• 2, 3, 4, 1

• 1, 3, 2, 4

Which of these statements is TRUE of the fossil record?

• The fossil record contains a complete record of every extinct organism.

• The fossil record contains mostly soft organisms that had no hard bones of outer shell

• Newer layers contain organisms more similar to modern-day organisms than do older layers.

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NGSS.MS-LS4-1

The diagram below shows a portion of the fossil record in sedimentary rock. Different rock layers and fossils are clearly visible.

• Layer B contains the second-oldest fossils.

• Layer A contains the most recently formed fossils.

• The fossils in layer B are older than those in layer D.

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NGSS.MS-ESS1-4

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Mr. Van listed the following four topics on the board.

1.relationships between extinct and living organisms 2.ancestors of living organisms 3.ways that groups of species are related 4.genetic similarities and differences between extinct and modern-day species.

• 1 only

• 1 and 2

• 1, 2 and 3

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NGSS.MS-LS4-1

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Alex is studying leg bone fossils of an extinct species to see if the extinct organism could be an ancestor of a certain living species. Which of the following types of evidence could he obtain from studying fossils?

• genetic evidence

• embryological evidence

• structural evidence

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NGSS.MS-LS4-1

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A scientist described two modern-day species as sharing a common ancestor. What does it mean when two species share a common ancestor/

• It means that the two species are actually the same species

• It means that one of the species evolved from other species

• It means that both species evolved from one species that lived in the past.

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NGSS.MS-LS4-2

Which of these descriptions is an example of an unused body structure?

• a bat's wing that enables it to fly

• the tiny leg bones found in snakes that have no legs.

• the front legs of a dog that supports its weight as it walks and runs.

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NGSS.MS-LS4-2

Which of these best describes the tiny leg bones that some whales have, which do not aid in their movement or serve any other function?

• structures that grows and improved in function as they are used

• structures that function at certain times of the year or under certain conditions

• structures that may have been useful for ancestral species, but are reduced in size and have little or no function in a living species.

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