Question 1

Fig. 16.15
  
-The accompanying figure illustrates that after two half-lives,____ percent of the parent radioisotope has decayed.

Accepted Answer

A)  100 
B)  75 
C)  50 
D)  25 
E)  0 
A)  100 
B)  75 
C)  50 
D)  25 
E)  0

Question 2

The oldest fossils ____.

Accepted Answer

A)  demonstrate the widest distribution 
B)  represent the most highly evolved organisms 
C)  are buried deeper in the ground than newer forms 
D)  are found in Africa 
E)  are primitive marine vertebrates 
A)  demonstrate the widest distribution 
B)  represent the most highly evolved organisms 
C)  are buried deeper in the ground than newer forms 
D)  are found in Africa 
E)  are primitive marine vertebrates

Question 3

Darwin's theory states,in part,that individuals with certain traits have an increased competitive edge.What is the source of these traits?

Accepted Answer

A)  adaptation to stress 
B)  development over a lifetime 
C)  inheritance 
D)  mutation after birth 
E)  better living conditions 
A)  adaptation to stress 
B)  development over a lifetime 
C)  inheritance 
D)  mutation after birth 
E)  better living conditions

Question 4

Which ancient habitat has allowed the formation of the most abundant fossils?

Accepted Answer

A)  Eroding hillsides 
B)  Deserts 
C)  Polar ice caps 
D)  Rivers and shallow seas 
E)  Rocky plateau 
A)  Eroding hillsides 
B)  Deserts 
C)  Polar ice caps 
D)  Rivers and shallow seas 
E)  Rocky plateau

Question 5

Which of the following statements is incorrect in the context of fossilization?

Accepted Answer

A)  Impressions form detailed imprints of only external structures. 
B)  Extreme pressure transforms the mineralized remains into rock. 
C)  Sediments that slowly accumulate on top of the site exert increasing pressure. 
D)  Minerals dissolved in the water gradually replace minerals in bones. 
E)  Mineral particles settle out of the groundwater and crystallize inside cavities. 
A)  Impressions form detailed imprints of only external structures. 
B)  Extreme pressure transforms the mineralized remains into rock. 
C)  Sediments that slowly accumulate on top of the site exert increasing pressure. 
D)  Minerals dissolved in the water gradually replace minerals in bones. 
E)  Mineral particles settle out of the groundwater and crystallize inside cavities.

Question 6

Natural selection results in changes in ____.

Accepted Answer

A)  individuals 
B)  populations 
C)  kingdoms 
D)  phyla 
E)  animals only 
A)  individuals 
B)  populations 
C)  kingdoms 
D)  phyla 
E)  animals only

Question 7

A fossil is found in a given rock strata.Which of the following would give the best information about its age?

Accepted Answer

A)  The mineral composition of the strata. 
B)  The density of the strata. 
C)  The depth of the strata. 
D)  The water content of the strata. 
E)  The location of the strata. 
A)  The mineral composition of the strata. 
B)  The density of the strata. 
C)  The depth of the strata. 
D)  The water content of the strata. 
E)  The location of the strata.

Question 8

How old was the world thought to be when Darwin began his voyage?

Accepted Answer

A)  6 million years old 
B)  6 thousand years old 
C)  3.5 million years old 
D)  2 billion years old 
E)  4.5 billion years old 
A)  6 million years old 
B)  6 thousand years old 
C)  3.5 million years old 
D)  2 billion years old 
E)  4.5 billion years old

Question 9

The best explanation for why the emu,ostrich,and rhea are so similar despite being geographically separated is

Accepted Answer

A)  continental drift. 
B)  morphological convergence. 
C)  natural selection. 
D)  gaps in the fossil record. 
E)  adaptation. 
A)  continental drift. 
B)  morphological convergence. 
C)  natural selection. 
D)  gaps in the fossil record. 
E)  adaptation.

Question 10

Glyptodons are fossil forms that resemble ____.

Accepted Answer

A)  ostriches 
B)  armadillos 
C)  kangaroos 
D)  turtles 
E)  sloths 
A)  ostriches 
B)  armadillos 
C)  kangaroos 
D)  turtles 
E)  sloths

Question 11

Radiometric dating ____.

Accepted Answer

A)  is based on the premise that each isotope decays at a constant rate 
B)  is unpredictable because of changes in temperature and pressure 
C)  can be used to date sedimentary rock, but not fossils 
D)  has a substantial error factor 
E)  can only be used for dating animal fossils 
A)  is based on the premise that each isotope decays at a constant rate 
B)  is unpredictable because of changes in temperature and pressure 
C)  can be used to date sedimentary rock, but not fossils 
D)  has a substantial error factor 
E)  can only be used for dating animal fossils

Question 12

Skeletons of modern cetaceans have remnants of a __________.

Accepted Answer

A)  rib 
B)  head 
C)  flipper 
D)  pelvis 
E)  spine 
A)  rib 
B)  head 
C)  flipper 
D)  pelvis 
E)  spine

Question 13

The operation of natural selection depends upon the fact that ____.

Accepted Answer

A)  the strong always survive, whereas the weak always die 
B)  some individuals have a better chance to produce more offspring 
C)  mutations are always harmful 
D)  acquired characteristics are inherited 
E)  reproduction of all members of a species follows the same path 
A)  the strong always survive, whereas the weak always die 
B)  some individuals have a better chance to produce more offspring 
C)  mutations are always harmful 
D)  acquired characteristics are inherited 
E)  reproduction of all members of a species follows the same path

Question 14

The process of fossilization typically begins when an organism or traces of it ____.

Accepted Answer

A)  settle on the seafloor 
B)  are pressurized under the weight of sediment 
C)  crystallize into minerals 
D)  are saturated with groundwater 
E)  become covered with sediments, mud, or ash 
A)  settle on the seafloor 
B)  are pressurized under the weight of sediment 
C)  crystallize into minerals 
D)  are saturated with groundwater 
E)  become covered with sediments, mud, or ash

Question 15

Natural selection drives evolution through the following forces except

Accepted Answer

A)  competition for food. 
B)  predators. 
C)  climate. 
D)  reproduction. 
E)  competition for mates. 
A)  competition for food. 
B)  predators. 
C)  climate. 
D)  reproduction. 
E)  competition for mates.

Exam 16: Evidence of Evolution

Fig. 16.15 -The accompanying figure illustrates that after two half-lives,____ percent of the parent radioisotope has decayed.

The oldest fossils ____.

Darwin's theory states,in part,that individuals with certain traits have an increased competitive edge.What is the source of these traits?

Which ancient habitat has allowed the formation of the most abundant fossils?

Which of the following statements is incorrect in the context of fossilization?

Natural selection results in changes in ____.

A fossil is found in a given rock strata.Which of the following would give the best information about its age?

How old was the world thought to be when Darwin began his voyage?

The best explanation for why the emu,ostrich,and rhea are so similar despite being geographically separated is

Glyptodons are fossil forms that resemble ____.

Radiometric dating ____.

Skeletons of modern cetaceans have remnants of a __________.

The operation of natural selection depends upon the fact that ____.

The process of fossilization typically begins when an organism or traces of it ____.

Natural selection drives evolution through the following forces except

Invitation to Biology

Life's Chemical Bases

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Processes of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters