Multiple Choice
Identify the choice that best completes the
statement or answers the question.
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1.
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Fossils that consist of minerals that have filled in an open mold of an organism
are called
a. | premineralized | c. | preserved remains | b. | natural casts | d. | trace fossils |
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2.
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The smallest unit of geologic time is a(n)
a. | epoch | c. | era | b. | period | d. | eon |
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3.
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The Miller-Urey experiment demonstrated that
a. | organic molecules first could have come to Earth on a meteorite | b. | iron-sulfide
bubbles may have acted as the first cell membranes. | c. | Liposome membranes containing organic molecules
preceded true cells. | d. | energy from lightning might have helped create
Earth’s first organic molecules. |
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4.
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The evolution of sexual reproduction resulted in
a. | decreased diversity | c. | genetically identical offspring | b. | slower rate of
evolution | d. | increased genetic
variation |
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5.
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The Age of Reptiles is a term often used to describe the
a. | Mesozoic era | c. | Cenozoic period | b. | Paleozoic era | d. | Precambrian
period |
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6.
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What group of animals includes modern humans?
a. | reptiles | c. | primates | b. | trilobites | d. | marsupials |
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7.
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Fossil evidence suggests Homo sapiens first appeared
a. | 4 million years ago | c. | 20,000 years ago | b. | 200,000 years ago | d. | 20 million years
ago |
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8.
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Which of the following would be a good index fossil?
a. | a crab species that existed for more then 150 million years | c. | a dinosaur species
that existed only in what is now Utah | b. | a trilobite species that had a very small
population | d. | a mollusk
species found worldwide for 5 million years |
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9.
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What is Earth thought to have been like four billion years ago?
a. | similar to present-day Earth but covered with glaciers | c. | tropical, with oceans and an oxygen
atmosphere | b. | a layered planet, with a well-developed atmosphere | d. | very hot, without continents, oceans, or
atmosphere |
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10.
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Which of the following organisms formed the oldest fossils?
a. | trilobites | c. | cyanobacteria | b. | hominids | d. | dinosaurs |
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11.
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The first multicellular organisms appeared during the
a. | Precambrian era | c. | Paleozoic era | b. | Mesozoic era | d. | Cenozoic era |
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12.
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Modern humans first evolved during the
a. | Cretaceouis period | c. | Ordovician period | b. | Jurassic period | d. | Quaternary
period |
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13.
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What primate group includes both gorillas and humans?
a. | prosimians | c. | hominoids | b. | hominids | d. | anthropoids |
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14.
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An important adaptice advantage of walking upright is
a. | freeing the hands for other activity | c. | appearing larger the other
species | b. | allowing the eyues to look formward | d. | being able to outrun
predators. |
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15.
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Which of the following statements is true about Homo sapiens?
a. | The first fossils appeared 200 million years ago: modern prosimisans belong to this
species | b. | The first fossils appeared 10 million years ago: modern gorillas belong to this
species | c. | The first fossils appeared 200,000 years ago; modern humans belong to this
species | d. | The first fossils appeared 20,000 years ago; modern chimpanzees belong to this
species |
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