Question 1

The idea that evolution proceeds with long periods of stasis with relatively brief bursts of fast evolutionary change is

Accepted Answer

A) temporal isolation. 
B) mechanical isolation. 
C) gradualism. 
D) punctuated equilibrium. 
E) hybrid breakdown. 
A) temporal isolation. 
B) mechanical isolation. 
C) gradualism. 
D) punctuated equilibrium. 
E) hybrid breakdown.

Question 2

Which of the following is not a type of prezygotic reproductive isolation?

Accepted Answer

A) temporal isolation 
B) gametic isolation 
C) hybrid infertility 
D) ecological isolation 
E) mechanical isolation 
A) temporal isolation 
B) gametic isolation 
C) hybrid infertility 
D) ecological isolation 
E) mechanical isolation

Question 3

Postzygotic isolation barriers prevent

Accepted Answer

A) a hybrid embryo from developing into a fertile adult. 
B) fertilization. 
C) male gametes from joining with female gametes. 
D) All answers are correct. 
E) formation of gametes by one of the parents. 
A) a hybrid embryo from developing into a fertile adult. 
B) fertilization. 
C) male gametes from joining with female gametes. 
D) All answers are correct. 
E) formation of gametes by one of the parents.

Question 4

Birds are least related to

Accepted Answer

A) non-avian dinosaurs. 
B) crocodiles. 
C) turtles. 
D) mammals. 
E) amphibians. 
A) non-avian dinosaurs. 
B) crocodiles. 
C) turtles. 
D) mammals. 
E) amphibians.

Question 5

Closely related plant species that attract different pollinators resulting in reproductive isolation is an example of

Accepted Answer

A) sympatric speciation. 
B) allopatric speciation. 
C) hybrid inviability. 
D) hybrid infertility. 
E) hybrid breakdown. 
A) sympatric speciation. 
B) allopatric speciation. 
C) hybrid inviability. 
D) hybrid infertility. 
E) hybrid breakdown.

Question 6

The impact of a large meteorite with Earth would have most likely caused mass extinctions by

Accepted Answer

A) causing a great prolonged rise in the earth's temperature and destroying plant life. 
B) creating large clouds of dust that blocked out sunlight only. 
C) causing a great prolonged rise in the earth's temperature only. 
D) creating large clouds of dust that blocked out sunlight and destroying plant life. 
E) destroying plant life on Earth only. 
A) causing a great prolonged rise in the earth's temperature and destroying plant life. 
B) creating large clouds of dust that blocked out sunlight only. 
C) causing a great prolonged rise in the earth's temperature only. 
D) creating large clouds of dust that blocked out sunlight and destroying plant life. 
E) destroying plant life on Earth only.

Question 7

Two species of finches found on the same Galapagos island but feeding on different food sources is an example of ____ speciation.

Accepted Answer

A) allopatric 
B) sympatric 
C) prezygotic 
D) postzygotic 
E) outgroup 
A) allopatric 
B) sympatric 
C) prezygotic 
D) postzygotic 
E) outgroup

Question 8

The process by which new species originate

Accepted Answer

A) is germination. 
B) is extinction. 
C) occurred only once in Earth's history. 
D) is speciation. 
E) occurred for millions of years but is no longer occurring. 
A) is germination. 
B) is extinction. 
C) occurred only once in Earth's history. 
D) is speciation. 
E) occurred for millions of years but is no longer occurring.

Question 9

Bacteria cannot be classified using the biological definition of a species for which reason?

Accepted Answer

A) The DNA sequences of all bacteria are more than 97% identical. 
B) Bacteria cannot reproduce. 
C) Bacteria are present everywhere and cannot be reproductively isolated from other bacteria. 
D) Bacteria are asexual. 
E) Bacteria do not evolvE. 
A) The DNA sequences of all bacteria are more than 97% identical. 
B) Bacteria cannot reproduce. 
C) Bacteria are present everywhere and cannot be reproductively isolated from other bacteria. 
D) Bacteria are asexual. 
E) Bacteria do not evolvE.

Question 10

What is the most inclusive level of the hierarchical classification scheme?

Accepted Answer

A) domain 
B) phylum 
C) kingdom 
D) genus 
E) species 
A) domain 
B) phylum 
C) kingdom 
D) genus 
E) species

Question 11

Three species of tigers have become extinct due to overharvesting or habitat destruction.This is an example of

Accepted Answer

A) mass extinction. 
B) background extinction rate. 
C) sympatric speciation. 
D) increased extinction rate by human activity. 
E) allopatric speciation. 
A) mass extinction. 
B) background extinction rate. 
C) sympatric speciation. 
D) increased extinction rate by human activity. 
E) allopatric speciation.

Question 12

A discontinued line in an evolutionary tree indicates

Accepted Answer

A) extinction. 
B) gradualism. 
C) punctuated equilibrium. 
D) convergent evolution. 
E) temporal isolation. 
A) extinction. 
B) gradualism. 
C) punctuated equilibrium. 
D) convergent evolution. 
E) temporal isolation.

Question 13

Formation of a tetraploid plant species from two different diploid parental species of plants is an example of

Accepted Answer

A) punctuated equilibrium. 
B) gradualism. 
C) extinction. 
D) a postzygotic barrier to evolution. 
E) a prezygotic barrier to evolution. 
A) punctuated equilibrium. 
B) gradualism. 
C) extinction. 
D) a postzygotic barrier to evolution. 
E) a prezygotic barrier to evolution.

Question 14

Polyploidy is

Accepted Answer

A) common in plant species. 
B) common in fungal species. 
C) common in animal species. 
D) common in bacterial species. 
E) All answers are correct. 
A) common in plant species. 
B) common in fungal species. 
C) common in animal species. 
D) common in bacterial species. 
E) All answers are correct.

Question 15

"Missing" transitional forms may not be present in the fossil record because of poor preservation of biological material and simply because scientists have not discovered all there is to discover.

Accepted Answer

A) True 
 B)False

Question 16

Hawthorn maggot flies that breed on native hawthorns or introduced European apples can mate in the lab,but rarely mate in the wild.This is an example of ____ reproductive isolation.

Accepted Answer

A) postzygotic 
B) prezygotic 
C) allopatric 
D) sympatric 
E) outgroup 
A) postzygotic 
B) prezygotic 
C) allopatric 
D) sympatric 
E) outgroup

Question 17

Scientists have a complete fossil record showing the evolution of horses over millions of years,with the legs becoming longer and the teeth larger,as ancestors of the modern horse adapted from living in forest to grasslands.This is an example of

Accepted Answer

A) punctuated equilibrium. 
B) extinction. 
C) a postzygotic barrier to evolution. 
D) gradualism. 
E) a prezygotic barrier to evolution. 
A) punctuated equilibrium. 
B) extinction. 
C) a postzygotic barrier to evolution. 
D) gradualism. 
E) a prezygotic barrier to evolution.

Question 18

Centimeter-thin layers of earth that are rich in iridium give evidence to support the

Accepted Answer

A) allopatric theory. 
B) ecological isolation theory. 
C) gradualism theory. 
D) impact theory. 
E) punctuated equilibrium theory. 
A) allopatric theory. 
B) ecological isolation theory. 
C) gradualism theory. 
D) impact theory. 
E) punctuated equilibrium theory.

Question 19

What force leads to the evolution of a new species?

Accepted Answer

A) All answers are correct. 
B) prezygotic reproductive barriers 
C) postzygotic reproductive barriers 
D) compiled microevolution events 
E) large amount of genetic divergence 
A) All answers are correct. 
B) prezygotic reproductive barriers 
C) postzygotic reproductive barriers 
D) compiled microevolution events 
E) large amount of genetic divergence

Question 20

Which of the following is an example of macroevolution?

Accepted Answer

A) the origin of horses and donkeys from a common ancestor 
B) giraffes with longer necks reaching higher tree branches 
C) antibiotic resistance in S.aureus 
D) female cardinals preferring males with bright red feathers 
E) the beaks of cactus finches changing in size in response to a drought on the Galapagos islands 
A) the origin of horses and donkeys from a common ancestor 
B) giraffes with longer necks reaching higher tree branches 
C) antibiotic resistance in S.aureus 
D) female cardinals preferring males with bright red feathers 
E) the beaks of cactus finches changing in size in response to a drought on the Galapagos islands

Exam 14: Speciation and Extinction

The idea that evolution proceeds with long periods of stasis with relatively brief bursts of fast evolutionary change is

Which of the following is not a type of prezygotic reproductive isolation?

Postzygotic isolation barriers prevent

Birds are least related to

Closely related plant species that attract different pollinators resulting in reproductive isolation is an example of

The impact of a large meteorite with Earth would have most likely caused mass extinctions by

Two species of finches found on the same Galapagos island but feeding on different food sources is an example of ____ speciation.

The process by which new species originate

Bacteria cannot be classified using the biological definition of a species for which reason?

What is the most inclusive level of the hierarchical classification scheme?

Three species of tigers have become extinct due to overharvesting or habitat destruction.This is an example of

A discontinued line in an evolutionary tree indicates

Formation of a tetraploid plant species from two different diploid parental species of plants is an example of

Polyploidy is

"Missing" transitional forms may not be present in the fossil record because of poor preservation of biological material and simply because scientists have not discovered all there is to discover.

Hawthorn maggot flies that breed on native hawthorns or introduced European apples can mate in the lab,but rarely mate in the wild.This is an example of ____ reproductive isolation.

Scientists have a complete fossil record showing the evolution of horses over millions of years,with the legs becoming longer and the teeth larger,as ancestors of the modern horse adapted from living in forest to grasslands.This is an example of

Centimeter-thin layers of earth that are rich in iridium give evidence to support the

What force leads to the evolution of a new species?

Which of the following is an example of macroevolution?

Scientific Study of Life

The Chemistry of Life

Cells

The Energy of Life

Photosynthesis

How Cells Release Energy

DNA Structure and Gene Function

DNA Replication and Cell Division

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Population Ecology

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

Regulating Temperature, nutrients, and Body Fluids

The Immune System

Animal Reproduction and Development

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