Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the
majority of words/phrases. Choose the option that does not fit the pattern.
44)
a. placental b. eukaryote c. marsupial d. mammal
44)
45)
a. oxygen b. carbon dioxide c. outgassing d.
photosynthesis
45)
c
46)
Western North America is the leading edge of the ________ plate.
46)
47)
Primitive organisms, called ________, reproduce asexually and contain cells that lack
organized nuclei.
47)
48)
By the late ________ Period, true air–breathing amphibians with fish–like heads and tails
had evolved.
48)
49)
What were the three gases that made up Earth’s original atmosphere?
49)
50)
Bacteria that thrive in oxygen free environments are called ________ bacteria.
50)
Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the
majority of words/phrases. Choose the option that does not fit the pattern.
51)
a. Cambrian b. Mississippian c. Jurassic d. Devonian
51)
c
52)
The Cenozoic Era is often called the “age of ________.”
52)
53)
The late ________ Era extinction was the greatest of at least five mass extinctions to occur
over the past 600 million years.
53)
b
54)
Extensive deposits of ________ ore are found worldwide in Precambrian rocks.
54)
55)
Modern human evolution takes place during the ________ Period of the ________ Era.
55)
Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the
majority of words/phrases. Choose the option that does not fit the pattern.
56)
a. trilobites b. brachiopods c. fish d. dinosaurs
56)
57)
The development of ________, organisms that reproduce sexually and have cells that
contain nuclei, may have increased dramatically the rate of evolutionary change.
57)
58)
The ________ Period was the “golden age of trilobites.”
58)
Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the
majority of words/phrases. Choose the option that does not fit the pattern.
59)
a. ammonia b. carbon dioxide c. methane d. oxygen
59)
60)
The ________ Eon spans about 88% of Earth‘s history.
60)
61)
Many of the most ancient fossils are found in a hard, dense, chemical rock called ________.
61)
62)
The time of the great extinction that took place at the end of the Mesozoic Era is called the
________ or KT boundary.
62)
63)
One hypothesis for the extinction that took place at the end of the Mesozoic is that a large
________ collided with Earth.
63)
64)
On continents, large “core areas” of Precambrian rocks, called ________, dominate the
surface.
64)
65)
The sun in the making is known as the ________.
65)
66)
Following the mass extinction at the end of the Mesozoic Era, two groups of mammals, the
________ and placentals, further evolved and diversified.
66)
67)
Towards the end of the Mesozoic Era, the ________ Orogeny formed the southern ranges of
the Rocky Mountains.
67)
68)
________ are the dominant land plants of the Cenozoic Era.
68)
69)
During the process of ________, plants release the gas ________.
69)
70)
The most economically important resource in Cenozoic strata of the Gulf Coast is ________.
70)
71)
The ________ were the dominant trees of the Mesozoic Era.
71)
Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the
majority of words/phrases. Choose the option that does not fit the pattern.
72)
a. Cretaceous b. Jurassic c. Oligocene d. Triassic
72)
TRUE/FALSE. Write ‘T’ if the statement is true and ‘F’ if the statement is false.
73)
A wave of late Pleistocene extinctions rapidly eliminated many large mammals.
74)
Volcanic activity was common in Western North America during much of the Cenozoic.
75)
The earliest land plants had large, broad leafs to efficiently intercept sunlight.
76)
Earth‘s original atmosphere, several billion years ago, was similar to the present atmosphere.
77)
Many reptile groups became extinct at the close of the Cenozoic Era.
78)
Most Mesozoic rocks are devoid of fossils, consequently this is the least understood span of Earth’s
history.
79)
Altered climatic conditions at the end of the Paleozoic Era caused one of the most dramatic
biological declines in all Earth history.
80)
The Cenozoic Era is the age of mammals.
81)
The evolution of both birds and mammals was strongly influenced by the development of
flowering plants.
82)
Fossil fuels are abundant in Precambrian rocks.
83)
Due to differentiation, the lighter, gaseous materials escaped Earth’s interior and became the
primitive atmosphere.
84)
During the Cenozoic Era, a great wedge of sediments from the eroding Rockies created the Great
Plains.
85)
During the early Paleozoic Era, the continent of Gondwanaland included North and South
America.
86)
Evidence of an extensive glaciation places western Africa near the South Pole during the early
Paleozoic Era.
87)
Evidence indicates that some dinosaurs were warm blooded.
88)
The first true terrestrial land animals were the mammals.
89)
With the perfection of the shelled egg, reptiles quickly became the dominant land animals of the
Mesozoic Era.
90)
The beginning of the Precambrian Era is marked by the appearance of the first life forms with hard
parts.
91)
A major event of the Mesozoic Era was the breakup of the supercontinent called Pangaea.
92)
Much of the original free oxygen in the atmosphere combined with iron dissolved in water to
become iron oxide.
93)
When Earth’s primitive surface cooled below water’s boiling point, torrential rains slowly filled low
areas, forming oceans.
94)
During the Cenozoic Era, the eastern and western margins of North America experienced similar
geologic events.
95)
We are now living in the Mesozoic era.
96)
The major source of oxygen in Earth‘s atmosphere is from the decay of plants.
97)
The fault–block mountains of Nevada and Mexico formed during the Cenozoic Era.
98)
Mammals replaced reptiles as the dominant land animals in the Cenozoic Era.
99)
Probably the single most characteristic feature of the Precambrian is its great abundance of fossil
evidence.
100)
The bodies of our solar system began forming about 5 billion years ago from an enormous cloud of
minute rocky fragments and gases.
100)
101)
The supercontinent of Pangaea formed during the late Mesozoic Era.
101)
ESSAY. Write your answer in the space provided or on a separate sheet of paper.
Critical thinking and discussion questions. Use complete sentences, correct spelling, and the information presented in
chapter 19 to answer the questions below.
102)
Compare and contrast the patterns of life in the Paleozoic Era to the Mesozoic Era. What are the major
differences between these two eras? Are there similarities or similar trends?
103)
Briefly discuss the origin of Earth’s atmosphere and oceans. Are the two related to one another? Also, has the
atmosphere remained constant over time or has it changed? And if so then how has it changed?
104)
Why is it so difficult to interpret the geology of the Precambrian? How are these difficulties or limitations
different in the younger eras of the Phanerozoic Eon? Finally, are there unique rocks or events in the
Precambrian that are not present in younger rocks?
Answer Key
Testname: C19
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Answer Key
Testname: C19
Answer Key
Testname: C19
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