Question 1

The large geologic time period which includes eons that predate life on Earth,and also include eons in which the earliest life on Earth began is the

Accepted Answer

A)   Phanerozoic.
B)   Cenozoic.
C)   Precambrian.
D)   Hadean.
E)   Archaean.F) D) and E)
G) C) and E)

Question 2

The observation that most aquatic vertebrates (e.g.fish,penguins,and whales) have streamlined bodies and fins or flippers for steering are a result of

Accepted Answer

A)   analogous selection.
B)   convergent evolution.
C)   sexual selection.
D)   vestigial selection.
E)   artificial selection.F) A) and B)
G) B) and E)

Question 3

In the geologic timescale used by our author,the sequence of eons and eras beginning with the earliest era and proceeding forward to the most recent era is

Accepted Answer

A)   Paleozoic - Proterozoic - Archean - Mesozoic - Cenozoic.
B)   Archean - Paleozoic - Proterozoic - Cenozoic - Mesozoic.
C)   Mesozoic - Cenozoic - Paleozoic - Proterozoic - Archean.
D)   Archean - Proterozoic - Paleozoic - Mesozoic - Cenozoic.
E)   Cenozoic - Archean - Mesozoic - Paleozoic - Proterozoic.F) B) and E)
G) A) and E)

Question 4

According to Plate Tectonics Theory,Earth once consisted of a single,large landmass named

Accepted Answer

A)   Pangaea.
B)   Gondwana.
C)   Panthalassa.
D)   Laurasia.
E)   Ultima Continenta.F) B) and C)
G) A) and B)

Question 5

Dinosaurs devoloped,became diverse and eventually became extinct during the Paleozoic era.

Accepted Answer

A) True 
 B)False

Question 6

The fossil record is often incomplete,in part because scientists will never be able to discover some of the fossils that are buried deep in the earth.

Accepted Answer

A) True 
 B)False

Question 7

Some dinosaurs and birds share characteristics that make flight possible such as

Accepted Answer

A)   All of the answer choices are correct.
B)   hollow bones.
C)   a horizontal back.
D)   a short tail.
E)   an upright stance.F) All of the above
G) C) and E)

Question 8

Which of the following is least likely to be preserved as a fossil?

Accepted Answer

A)   a leaf or stem
B)   a bone or shell
C)   an organ like an eye or lung
D)   a complete large organism
E)   an organism that died on landF) All of the above
G) A) and B)

Question 9

The name of the specialized field of studies that examines fossils and other clues to past life or environmental conditions is

Accepted Answer

A)   All of these answer options refer to the specific study of fossils.
B)   genetics.
C)   microevolution.
D)   evolution.
E)   paleontology.F) C) and D)
G) A) and D)

Question 10

According to fossil evidence,Tiktaalik either crawled or paddled in shallow,tropical streams,approximately 380 mya.These streams may have occasionally become anaerobic,but fossil structures in Tiktaalik indicate it could have what adaptation or selective advantage in these conditions?

Accepted Answer

A)   It could swim better than fish with the adaptation for both gills and lungs.
B)   It could lift and support its head to breath air with its lungs.
C)   It could easily crawl long distances to find new water habitats when needed.
D)   It could feed equally well on aquatic foods, and terrestrial foods.E) None of the above
F) B) and C)

Question 11

Relative dating uses ______ to estimate how old a fossil is.

Accepted Answer

A)   structural features
B)   radioactive isotopes
C)   a molecular clock
D)   embryonic structures
E)   depth within rock layersF) A) and D)
G) B) and C)

Question 12

The abundant presence of ammonite fossils,corals,sponges,and crinoids in a large area indicate that the area was once part of an ocean.

Accepted Answer

A) True 
 B)False

Question 13

Figuer: 
-A phylogenetic tree is shown in part (b) of the image above.Phylogenetic trees visually represent hypotheses of the evolutionary relationships and ancestry of species or species groups.In this case,Najash is placed in proposed context with other snake species,representing different groups of snakes around the world.What can you conclude about the evolution of sea snakes and the Najash species?

Accepted Answer

A)   Najash is proposed as a separate group from other snakes, while the three fossil marine snakes are more similar to living snakes.
B)   The phylogenetic tree shows that Najash, lower in the diagram, had the fossil marine snakes in its ancestry.
C)   Najash diverged separately and earlier than the three fossil marine snakes, indicating only weak evolutionary relationship.
D)   Both Najash and the three fossil marine snakes have ancestry traced back to an original snake species.
E)   All of these answer options are correct, except that Najash did not have fossil marine snakes in its ancestry.F) A) and B)
G) None of the above

Question 14

When ocean levels dropped about 70 million years ago,marsupial mammals moved into North America and displaced many of the placental mammal species.

Accepted Answer

A) True 
 B)False

Question 15

The abundant remains of ammonites in Oklahoma indicate that Oklahoma was

Accepted Answer

A)   once covered by a shallow ocean.
B)   part of a vast tropical forest.
C)   once a part of a mountain range that has now eroded.
D)   once a vast desert with almost no rainfall.
E)   always a semi-arid grassland.F) B) and E)
G) B) and C) A

Question 16

Placental mammals give birth to more fully developed offspring than marsupial mammals and therefore have a greater chance of survival.This helps to explain why placental mammals from North America displaced many native South American marsupial mammals when a land bridge formed between the two continents.

Accepted Answer

A) True 
 B)False

Question 17

The half life of 14C is 5,730 years.11,460 years after an organism dies,what percent of the initial 14C will still be present in the organism's bones?

Accepted Answer

A)   75%
B)   100%
C)   0%
D)   25%
E)   50%F) D) and E)
G) B) and D) D

Question 18

Figuer: 
-Fossil evidence shows that Tiktaalik had both lungs and gills,indicating that it could

Accepted Answer

A)   take in food for nutrition through the gills, but breath the air for oxygen.
B)   absorb oxygen only from the air.
C)   take in food for nutrition from the air or the water.
D)   absorb oxygen from both air and water.
E)   absorb oxygen only from the water.F) None of the above
G) A) and D) D

Question 19

Amphibians,birds,and mammals look the most similar as

Accepted Answer

A)   fossils.
B)   embryos.
C)   newborns.
D)   juveniles.
E)   adults.F) B) and E)
G) All of the above

Question 20

The discovery of the fossilized remains of Archaeopteryx in 1860 led to the beginning of the hypothesis of birds being closely related to

Accepted Answer

A)   butterflies.
B)   salamanders.
C)   dinosaurs.
D)   bats.
E)   bees.F) B) and E)
G) C) and D)

Exam 13: Evidence of Evolution

The large geologic time period which includes eons that predate life on Earth,and also include eons in which the earliest life on Earth began is the

Correct Answer
verified

The observation that most aquatic vertebrates (e.g.fish,penguins,and whales) have streamlined bodies and fins or flippers for steering are a result of

Correct Answer
verified

In the geologic timescale used by our author,the sequence of eons and eras beginning with the earliest era and proceeding forward to the most recent era is

Correct Answer
verified

According to Plate Tectonics Theory,Earth once consisted of a single,large landmass named

Correct Answer
verified

Dinosaurs devoloped,became diverse and eventually became extinct during the Paleozoic era.

Correct Answer
verified

The fossil record is often incomplete,in part because scientists will never be able to discover some of the fossils that are buried deep in the earth.

Correct Answer
verified

Some dinosaurs and birds share characteristics that make flight possible such as

Correct Answer
verified

Which of the following is least likely to be preserved as a fossil?

Correct Answer
verified

The name of the specialized field of studies that examines fossils and other clues to past life or environmental conditions is

Correct Answer
verified

According to fossil evidence,Tiktaalik either crawled or paddled in shallow,tropical streams,approximately 380 mya.These streams may have occasionally become anaerobic,but fossil structures in Tiktaalik indicate it could have what adaptation or selective advantage in these conditions?

Correct Answer
verified

Relative dating uses ______ to estimate how old a fossil is.

Correct Answer
verified

The abundant presence of ammonite fossils,corals,sponges,and crinoids in a large area indicate that the area was once part of an ocean.

Correct Answer
verified

Correct Answer
verified

When ocean levels dropped about 70 million years ago,marsupial mammals moved into North America and displaced many of the placental mammal species.

Correct Answer
verified

The abundant remains of ammonites in Oklahoma indicate that Oklahoma was

Correct Answer
verified
A

Correct Answer
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The half life of ¹⁴C is 5,730 years.11,460 years after an organism dies,what percent of the initial ¹⁴C will still be present in the organism's bones?

Correct Answer
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D

Figuer: -Fossil evidence shows that Tiktaalik had both lungs and gills,indicating that it could

Correct Answer
verified
D

Amphibians,birds,and mammals look the most similar as

Correct Answer
verified

The discovery of the fossilized remains of Archaeopteryx in 1860 led to the beginning of the hypothesis of birds being closely related to

Correct Answer
verified

Exam 13: Evidence of Evolution

The large geologic time period which includes eons that predate life on Earth,and also include eons in which the earliest life on Earth began is the

Correct AnswerverifiedShow Answer

The observation that most aquatic vertebrates (e.g.fish,penguins,and whales) have streamlined bodies and fins or flippers for steering are a result of

Correct AnswerverifiedShow Answer

In the geologic timescale used by our author,the sequence of eons and eras beginning with the earliest era and proceeding forward to the most recent era is

Correct AnswerverifiedShow Answer

According to Plate Tectonics Theory,Earth once consisted of a single,large landmass named

Correct AnswerverifiedShow Answer

Dinosaurs devoloped,became diverse and eventually became extinct during the Paleozoic era.

Correct AnswerverifiedShow Answer

The fossil record is often incomplete,in part because scientists will never be able to discover some of the fossils that are buried deep in the earth.

Correct AnswerverifiedShow Answer

Some dinosaurs and birds share characteristics that make flight possible such as

Correct AnswerverifiedShow Answer

Which of the following is least likely to be preserved as a fossil?

Correct AnswerverifiedShow Answer

The name of the specialized field of studies that examines fossils and other clues to past life or environmental conditions is

Correct AnswerverifiedShow Answer

According to fossil evidence,Tiktaalik either crawled or paddled in shallow,tropical streams,approximately 380 mya.These streams may have occasionally become anaerobic,but fossil structures in Tiktaalik indicate it could have what adaptation or selective advantage in these conditions?

Correct AnswerverifiedShow Answer

Relative dating uses ______ to estimate how old a fossil is.

Correct AnswerverifiedShow Answer

The abundant presence of ammonite fossils,corals,sponges,and crinoids in a large area indicate that the area was once part of an ocean.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When ocean levels dropped about 70 million years ago,marsupial mammals moved into North America and displaced many of the placental mammal species.

Correct AnswerverifiedShow Answer

The abundant remains of ammonites in Oklahoma indicate that Oklahoma was

Correct AnswerverifiedA

Correct AnswerverifiedShow Answer

The half life of 14C is 5,730 years.11,460 years after an organism dies,what percent of the initial 14C will still be present in the organism's bones?

Correct AnswerverifiedD

Figuer: -Fossil evidence shows that Tiktaalik had both lungs and gills,indicating that it could

Correct AnswerverifiedD

Amphibians,birds,and mammals look the most similar as

Correct AnswerverifiedShow Answer

The discovery of the fossilized remains of Archaeopteryx in 1860 led to the beginning of the hypothesis of birds being closely related to

Correct AnswerverifiedShow Answer

Correct Answer
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A

Correct Answer
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The half life of ¹⁴C is 5,730 years.11,460 years after an organism dies,what percent of the initial ¹⁴C will still be present in the organism's bones?

Correct Answer
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D

Correct Answer
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D

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Correct Answer
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