Question 1

To which period specialist should you forward the fossils?

Accepted Answer

A)   Devonian
B)   Carboniferous
C)   Permian
D)   TriassicE) B) and C)
F) A) and D)

Question 2

Of the following groups, which have been in existence the longest?

Accepted Answer

A)   multicellular animals
B)   cyanobacteria
C)   gastropods
D)   green algaeE) B) and D)
F) A) and B)

Question 3

Which group of vertebrates possessed an anatomical feature that made evolution of the limbs of all tetrapods possible?

Accepted Answer

A)   reptiles
B)   sharks
C)   amphibians
D)   lobe-finned fishE) A) and D)
F) None of the above

Question 4

Experiments with enzymes made of RNA support which origin-of-life model?

Accepted Answer

A)   Miller model
B)   replicator-first model
C)   metabolism-first model
D)   DNA world modelE) None of the above
F) B) and C)

Question 5

You discover a single-celled organism that does not have a nucleus, and you also notice that the culture is producing methane. In which group would you place this organism?

Accepted Answer

A)   Domain Bacteria
B)   Domain Archaea
C)   Domain Eukarya
D)   Kingdom ProtistaE) B) and D)
F) B) and C)

Question 6

A major event in the Precambrian era responsible for dramatically increasing organic material on Earth was:

Accepted Answer

A)   evolution of mitochondria.
B)   evolution of photosynthesis.
C)   deposition of carbon in rocks.
D)   leaching of sulfur into the oceans.E) None of the above
F) A) and D)

Question 7

The oxygen present in Earth's atmosphere has been produced as a waste product of the process of ________.

Accepted Answer

The answer of The oxygen present in Earth's atmosphere has...

Question 8

An organelle that probably evolved from an independent organism that moved inside and began to live within a eukaryotic cell is the:

Accepted Answer

A)   mitochondrion.
B)   nucleus.
C)   Golgi apparatus.
D)   endoplasmic reticulum.E) C) and D)
F) None of the above

Question 9

Early mammals differed from reptiles in many respects, including:

Accepted Answer

A)   the number of legs used for walking.
B)   feeding their young milk.
C)   eating other organisms for food.
D)   internal versus external fertilization.E) A) and B)
F) A) and C)

Question 10

Examine and explain the connections between Stanley Miller's experiments and the importance of the evolution of photosynthesis to the current state of life on Earth.

Accepted Answer

Although Miller's experiments demonstrat...

Question 11

During the Silurian, the oxygen gas concentration in the atmosphere is postulated to have reached an amount equivalent to more than 10 percent of its present-day concentration. Thus, nearly all lethal ultraviolet radiation was unable to reach the Earth's surface, making dry land available for newly evolved forms. Which of the following major events in the evolution of animals and plants probably occurred at this time?

Accepted Answer

A)   The amphibians developed watertight skins and eggs.
B)   The crayfish become the first land organisms.
C)   The first major groups of seed plants appeared.
D)   Primitive bryophytes and fern-like plants appeared.E) All of the above
F) None of the above

Question 12

An adaptation of arthropods that made them well adapted for life on land was an exoskeleton that can:

Accepted Answer

A)   provide camouflage.
B)   prevent water loss.
C)   overcome the effects of gravity.
D)   protect against predators.E) C) and D)
F) A) and B)

Question 13

Which of the following is an adaptation that helped plants move from aquatic environments to the land?

Accepted Answer

A)   seeds
B)   a cuticle
C)   pollen
D)   swimming spermE) C) and D)
F) All of the above

Question 14

Discuss why many scientists consider RNA to have been the basis for early forms of life.

Accepted Answer

RNA can make exact copies of itself, and...

Question 15

What adaptations did ancient algae have to achieve as they washed ashore and evolved into the more advanced land plants we see today?

Accepted Answer

Algae achieved these adaptations: anchor...

Question 16

Which of these gases was absent in the early Earth atmosphere at the time life first appeared?

Accepted Answer

A)   nitrogen
B)   water vapor
C)   carbon dioxide
D)   oxygenE) None of the above
F) A) and C)

Question 17

Refer to the scenario below, and then answer the following question(s) .
You are the managing naturalist for a natural history museum that has just received a batch of fossils from one of the field paleontologists sponsored by the museum. The note in the box states the fossils all came from the same rock layer. The museum is organized according to geologic timescale, and its management needs you to tell them to which department (based on era)  and period specialist (an individual with experience with life-forms of a particular geologic-timescale period)  the fossils should go. You find fossils of fish and seed-bearing plants but no reptiles or higher animals and no flowering plants.
-To which era do these fossils belong?

Accepted Answer

A)   Precambrian
B)   Paleozoic
C)   Mesozoic
D)   CenozoicE) B) and C)
F) C) and D)

Question 18

The early primates were specialized for life in the ________.

Accepted Answer

The answer of The early primates were specialized for life...

Question 19

A major difference between cells of organisms in Domain Eukarya and the cells of those in Domains Bacteria and Archaea is that:

Accepted Answer

A)   Domain Eukarya organisms can only live in acid environments.
B)   Domain Bacteria and Archaea cells can only live in acid environments.
C)   Domain Bacteria and Archaea cells have a nucleus and Domain Eukarya cells do not.
D)   cells of Domain Eukarya have a nucleus and Domains Bacteria and Archaea do not.E) B) and C)
F) None of the above

Question 20

The gnathostomes were the first vertebrates to:

Accepted Answer

A)   develop gills.
B)   possess jaws.
C)   develop scales.
D)   develop feathers.E) A) and B)
F) A) and C)

Exam 19: A Slow Unfolding: the History of Life on Earth

Correct Answer
verified

The early primates were specialized for life in the ________.

Correct Answer
verified

An organelle that probably evolved from an independent organism that moved inside and began to live within a eukaryotic cell is the:

Correct Answer
verified

Which of these gases was absent in the early Earth atmosphere at the time life first appeared?

Correct Answer
verified

The oxygen present in Earth's atmosphere has been produced as a waste product of the process of ________.

Correct Answer
verified

You discover a single-celled organism that does not have a nucleus, and you also notice that the culture is producing methane. In which group would you place this organism?

Correct Answer
verified

To which period specialist should you forward the fossils?

Correct Answer
verified

Discuss why many scientists consider RNA to have been the basis for early forms of life.

Correct Answer
verified
RNA can make exact copies of itself, and...
View Answer

Correct Answer
verified

Experiments with enzymes made of RNA support which origin-of-life model?

Correct Answer
verified

A major event in the Precambrian era responsible for dramatically increasing organic material on Earth was:

Correct Answer
verified

The gnathostomes were the first vertebrates to:

Correct Answer
verified

Of the following groups, which have been in existence the longest?

Correct Answer
verified

Early mammals differed from reptiles in many respects, including:

Correct Answer
verified

Which of the following is an adaptation that helped plants move from aquatic environments to the land?

Correct Answer
verified

An adaptation of arthropods that made them well adapted for life on land was an exoskeleton that can:

Correct Answer
verified

Which group of vertebrates possessed an anatomical feature that made evolution of the limbs of all tetrapods possible?

Correct Answer
verified

Examine and explain the connections between Stanley Miller's experiments and the importance of the evolution of photosynthesis to the current state of life on Earth.

Correct Answer
verified
Although Miller's experiments demonstrat...
View Answer

A major difference between cells of organisms in Domain Eukarya and the cells of those in Domains Bacteria and Archaea is that:

Correct Answer
verified

What adaptations did ancient algae have to achieve as they washed ashore and evolved into the more advanced land plants we see today?

Correct Answer
verified
Algae achieved these adaptations: anchor...
View Answer

Exam 19: A Slow Unfolding: the History of Life on Earth

Correct AnswerverifiedShow Answer

The early primates were specialized for life in the ________.

Correct AnswerverifiedShow Answer

An organelle that probably evolved from an independent organism that moved inside and began to live within a eukaryotic cell is the:

Correct AnswerverifiedShow Answer

Which of these gases was absent in the early Earth atmosphere at the time life first appeared?

Correct AnswerverifiedShow Answer

The oxygen present in Earth's atmosphere has been produced as a waste product of the process of ________.

Correct AnswerverifiedShow Answer

You discover a single-celled organism that does not have a nucleus, and you also notice that the culture is producing methane. In which group would you place this organism?

Correct AnswerverifiedShow Answer

To which period specialist should you forward the fossils?

Correct AnswerverifiedShow Answer

Discuss why many scientists consider RNA to have been the basis for early forms of life.

Correct AnswerverifiedRNA can make exact copies of itself, and...View AnswerShow Answer

Correct AnswerverifiedShow Answer

Experiments with enzymes made of RNA support which origin-of-life model?

Correct AnswerverifiedShow Answer

A major event in the Precambrian era responsible for dramatically increasing organic material on Earth was:

Correct AnswerverifiedShow Answer

The gnathostomes were the first vertebrates to:

Correct AnswerverifiedShow Answer

Of the following groups, which have been in existence the longest?

Correct AnswerverifiedShow Answer

Early mammals differed from reptiles in many respects, including:

Correct AnswerverifiedShow Answer

Which of the following is an adaptation that helped plants move from aquatic environments to the land?

Correct AnswerverifiedShow Answer

An adaptation of arthropods that made them well adapted for life on land was an exoskeleton that can:

Correct AnswerverifiedShow Answer

Which group of vertebrates possessed an anatomical feature that made evolution of the limbs of all tetrapods possible?

Correct AnswerverifiedShow Answer

Examine and explain the connections between Stanley Miller's experiments and the importance of the evolution of photosynthesis to the current state of life on Earth.

Correct AnswerverifiedAlthough Miller's experiments demonstrat...View AnswerShow Answer

A major difference between cells of organisms in Domain Eukarya and the cells of those in Domains Bacteria and Archaea is that:

Correct AnswerverifiedShow Answer

What adaptations did ancient algae have to achieve as they washed ashore and evolved into the more advanced land plants we see today?

Correct AnswerverifiedAlgae achieved these adaptations: anchor...View AnswerShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
RNA can make exact copies of itself, and...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Although Miller's experiments demonstrat...
View Answer

Correct Answer
verified

Correct Answer
verified
Algae achieved these adaptations: anchor...
View Answer