Biology: The Dynamics of Life, California Edition

Chapter 14: The History of Life

The History of Life

1.
The Geologic Time Scale begins at the formation of Earth approximately _____ years ago.
A)4.6 thousand
B)4.6 billion
C)4.6 million
D)46 million
2.
Which of the following fossils are not found in sedimentary rock?
A)frozen mammoths
B)petrified wood
C)amber
D)imprints
3.
Which group of organisms is believed to have been the earliest to evolve?
A)cyanobacteria
B)aquatic dinosaurs
C)land plants
D)mammals
4.
Humans are thought to have evolved during the _____ Era.
A)Mesozoic
B)Precambrian
C)Paleozoic
D)Cenozoic
5.
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According to Figure 14-4, the correct chronological order of organisms as they develop are _____.
A)prokaryotes, jawed fish, dinosaurs, birds
B)jawed fish, dinosaurs, prokaryotes, birds
C)birds, dinosaurs, jawed fish, prokaryotes
D)dinosaurs, jawed fish, birds, prokaryotes
6.
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According to Figure 14-4, what was the earliest form of multicellular life on Earth?
A)reptiles
B)fish
C)invertebrates
D)land plants
7.
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According to Figure 14-4, in how many eras have mammals existed?
A)5
B)7
C)2
D)4
8.
According to one theory, the first prokaryotes probably obtained their food _____.
A)through a combination of photosynthesis and aerobic respiration
B)by eating carbohydrates formed by autotrophs
C)through the synthesis of organic molecules from inorganic molecules
D)by consuming organic molecules available in their environment
9.
Which event contributed most directly to the evidence of aerobic organisms?
A)an increase in the number of organisms carrying on fermentation
B)an increase in the concentration of methane in the ancient atmosphere
C)the presence of organisms able to carry on photosynthesis
D)a decrease in the sun's light intensity
10.
Scientists agree that two developments must have occurred for life to come into being: the formation of simple organic molecules important to life and _____.
A)an atmosphere rich in water vapor, oxygen, and ATP
B)appearance of amino acids, monosaccharides, and lipids
C)organization of molecules into complex organic molecules
D)development of prokaryotic cells in early oceans
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