Worksheetsbio test ch 12
Total questions: 33
Worksheet time: 1hrs 3mins
Name
Class
Date
1.
The smallest unit of geologic time is a(n)
a)
a) epoch.
b)
b) period.
c)
c) era.
d)
d) eon.
2.
The bacterium shown in the figure may have evolved into a mitochondrion after going through the process of
a)
a) oxidation.
b)
b) photosynthesis.
c)
c) endosymbiosis.
d)
d) colonization.
3.
The table below shows four radioactive isotopes used in radiometric dating. How much chlorine-36 would be left in a sample after 600,000 years?
a)
a) 75% of the parent isotope
b)
b) 50% of the parent isotope
c)
c) 25% of the parent isotope
d)
d) 12.5% of the parent isotope
4.
Scientists hypothesize that cyanobacteria changed the early Earth by
a)
a) adding oxygen to the atmosphere.
b)
b) developing endosymbiotic relationships.
c)
c) turning into eukaryotic cells.
d)
d) getting energy from organic molecules.
5.
The evolution of sexual reproduction resulted in
a)
a) decreased diversity.
b)
b) slower rate of evolution.
c)
c) genetically identical offspring.
d)
d) increased genetic variation.
6.
The first land organisms emerged during the
a)
a) Cretaceous period.
b)
b) Paleozoic era.
c)
c) Mesozoic era.
d)
d) Tertiary period.
7.
The Age of Reptiles is a term often used to describe the
a)
a) Mesozoic era.
b)
b) Paleozoic era.
c)
c) Cenozoic era.
d)
d) Precambrian Time.
8.
Which unit of geologic time followed the mass extinction of dinosaurs?
a)
a) Cambrian period
b)
b) Jurassic period
c)
c) Mesozoic era
d)
d) Cenozoic era
9.
Fossil evidence suggests Homo sapiens first appeared
a)
a) 4 million years ago.
b)
b) 200,000 years ago.
c)
c) 20,000 years ago.
d)
d) 20 million years ago.
10.
A mammoth frozen in ice in Siberia is an example of
a)
a) preserved remains.
b)
b) a trace fossil.
c)
c) an amber-preserved fossil.
d)
d) a natural cast.
11.
Which of the following would be a good index fossil?
a)
a) a crab species that existed for more than 250 million years
b)
b) a trilobite species that had a very small population
c)
c) a dinosaur species that existed only in what is now Utah
d)
d) a mollusk species found worldwide for 5 million years
12.
What is Earth thought to have been like four billion years ago?
a)
a) similar to present-day Earth but covered with glaciers
b)
b) a layered planet, with a well-developed atmosphere
c)
c) tropical, with oceans and an oxygen atmosphere
d)
d) very hot, without continents, oceans, or atmosphere
13.
The "RNA world" theory of the origins of life proposes that on early Earth, genetic information was stored and copied by
a)
a) ribozymes.
b)
b) cyanobacteria.
c)
c) iron-sulfide bubbles.
d)
d) liposomes.
14.
What primate group includes both gorillas and humans?
a)
a) prosimians
b)
b) hominids
c)
c) hominoids
d)
d) anthropoids
15.
An important adaptive advantage of walking upright is
a)
a) freeing the hands for other activity.
b)
b) allowing the eyes to look forward.
c)
c) appearing larger than other species.
d)
d) being able to outrun predators.
16.
H erectus
a)
a) “handy man”, used stone tools
b)
b) Cro-Magnons, inception of modern culture
c)
c) followed migrating animals to Europe/Asia
d)
d) built shelters and had a burgeoning culture
e)
e) “Java Man” and “Peking Man”, used fire
17.
H habilus
a)
a) “handy man”, used stone tools
b)
b) Cro-Magnons, inception of modern culture
c)
c) followed migrating animals to Europe/Asia
d)
d) built shelters and had a burgeoning culture
e)
e) “Java Man” and “Peking Man”, used fire
18.
H neanderthalis
a)
a) “handy man”, used stone tools
b)
b) Cro-Magnons, inception of modern culture
c)
c) followed migrating animals to Europe/Asia
d)
d) built shelters and had a burgeoning culture
e)
e) “Java Man” and “Peking Man”, used fire
19.
H ergastor
a)
a) “handy man”, used stone tools
b)
b) Cro-Magnons, inception of modern culture
c)
c) followed migrating animals to Europe/Asia
d)
d) built shelters and had a burgeoning culture
e)
e) “Java Man” and “Peking Man”, used fire
20.
H sapien
a)
a) “handy man”, used stone tools
b)
b) Cro-Magnons, inception of modern culture
c)
c) followed migrating animals to Europe/Asia
d)
d) built shelters and had a burgeoning culture
e)
e) “Java Man” and “Peking Man”, used fire
21.
If index fossil A is 22-26 myo and fossil B is 19-24 myo, how old is fossil 2?
a)
19-26 myo
b)
19-22 myo
c)
22-24 myo
d)
24-26 myo
22.
If index fossil A is 22-26 myo and fossil B is 19-24 myo, how old is fossil 1?
a)
19-26 myo
b)
19-22 myo
c)
22-24 myo
d)
24-26 myo
23.
Which of the following is in correct chronological order?
a)
liquid water, anaerobic prokaryotes, oxygen, aerobic organisms
b)
liquid water, aerobic organisms, oxygen, anaerobic prokaryotes
c)
oxygen, anaerobic prokaryotes, liquid water, aerobic organisms
d)
oxygen, aerobic organisms, liquid water, anaerobic prokaryotes
24.
If an archeologist found a skull that’s foramen magnum (where the spine connects to the skull) was located posteriorly (in the back), what could she infer about the way the organism walked?
a)
biped
b)
quadruped
25.
What is the largest span of time in the Geologic Time Scale?
a)
Eras
b)
Periods
c)
Years
d)
Precambrian Time
26.
The Approximate Age of the Earth
a)
1 million years
b)
6,000 years
c)
4.55 billion years
d)
4.55 million years
27.
Where can the oldest layer be found?
a)
The top layer
b)
The middle layer
c)
They are all the same age
d)
The bottom layer
28.
Relative age dating is used to determine the...
a)
actual age of an event
b)
length of time between two events
c)
age of one event in comparison with other events
d)
rate at which a gologic process occurs
29.
What is NOT a name of one of the three eras on the Geologic Time Scale?
a)
Jurassic
b)
Paleozoic
c)
Mesozoic
d)
Cenozoic
30.
The "Age of Mammals"
a)
Cenozoic
b)
Mesozoic
c)
Paleozoic
d)
Precambrian
31.
The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?
a)
Fossil A and C are the same age
b)
Fossil B is older than fossil C
c)
Fossils A is older than fossil B
d)
Fossil D is older than fossil C
32.
Which era is known as the 'Age of Fishes' due to the dominance of fish species?
a)
a) Mesozoic era
b)
b) Paleozoic era
c)
c) Cenozoic era
d)
d) Precambrian Time
33.
What type of fossil is formed when minerals replace all or part of an organism?
a)
a) Preserved remains
b)
b) Trace fossil
c)
c) Cast fossil
d)
d) Petrified fossil
100 %
