Question 1

Which grouping includes all of the protists?

Accepted Answer

A)   Domain Archaea
B)   Domain Eukarya
C)   Kingdom Animalia
D)   Kingdom PlantaeE) A) and B)
F) B) and C)

Question 2

Which of the following mechanisms can drive evolution?

Accepted Answer

A)   Mutations
B)   Genetic drift
C)   Natural selection
D)   All of the aboveE) C) and D)
F) A) and B)

Question 3

Of those listed below,which category of classification is the most narrow?

Accepted Answer

A)   Class
B)   Domain
C)   Family
D)   GenusE) A) and D)
F) B) and D)

Question 4

Certain traits will have been lost from the gene pool forever.Some traits,such as red hair or double-jointed thumbs,may be obvious.Others,such as the ability to process cholesterol or an allergy to peanuts,will be less obvious.This loss of diversity in a reduced population is called ________.

Accepted Answer

A)   gene flow
B)   genetic drift
C)   bottleneck effect
D)   founder effectE) A) and D)
F) A) and C)

Question 5

What is the leading hypothesis for what might have brought about the extinction of the dinosaurs?

Accepted Answer

A)   A new disease
B)   Competition from mammals
C)   An asteroid impact
D)   Massive volcano eruptionsE) A) and B)
F) C) and D)

Question 6

The eastern meadowlark and the western meadowlark are two bird species that look very similar to each other.Why do biologists not consider them the same species?

Accepted Answer

A)   Species are not determined by appearance but by their ability to interbreed naturally.
B)   The two species do not live in the same habitat and thus do not interbreed in nature.
C)   The two species experience the reproductive barrier of habitat isolation.
D)   All of the above are correct.E) C) and D)
F) B) and D)

Question 7

Which of the following most often should lead to allopatric speciation?

Accepted Answer

A)   Habitat isolation
B)   Behavioral isolation
C)   Gametic incompatibility
D)   Mating time differencesE) A) and B)
F) All of the above

Question 8

Before Darwin published his work,Lamarck and others had suggested mechanisms for evolution.By what means did Darwin propose species evolved over time?

Accepted Answer

A)   Overproduction of young
B)   Passing on acquired traits
C)   Survival of the strongest
D)   Natural selectionE) All of the above
F) None of the above

Question 9

The slow drifting of sections of the earth's crust,sometimes separating,other times colliding,is known as ________.

Accepted Answer

A)   continental convergence
B)   continental divergence
C)   crust dynamics
D)   plate tectonicsE) All of the above
F) B) and D)

Question 10

What defines a population in evolution?

Accepted Answer

A)   Members of the same group that share a common ancestor
B)   Members of a single species
C)   Interbreeding members of the same species
D)   Multiple species interacting togetherE) All of the above
F) A) and D)

Question 11

If a changing environment increases rates of evolution,why do we see an increase in extinction rates following rapid global catastrophes?

Accepted Answer

Either the change is too swift...

Question 12

What term describes the failure of one species' sperm to fertilize the egg of a different species?

Accepted Answer

A)   Hybrid weakness
B)   Gametic incompatibility
C)   Mechanical incompatibility
D)   Mating time differencesE) All of the above
F) A) and C)

Question 13

Which of the following are considered fossils?

Accepted Answer

A)   Footprints or other impressions preserved in stone
B)   Mineralized bones
C)   Animals frozen in ice or preserved in amber
D)   All of theseE) B) and C)
F) A) and D)

Question 14

The rapid diversification of species seen in the fossil record followed by long periods of stasis is part of the ________ model of evolution.

Accepted Answer

A)   punctuated equilibrium
B)   symmetric
C)   spatial
D)   graduatedE) A) and B)
F) A) and C)

Question 15

Which of the following best defines microevolution?

Accepted Answer

A)   Changes in genes between populations
B)   Changes in genes within a population over time
C)   Changes in genes that do not change the gene pool over time
D)   Changes across species but not in genesE) C) and D)
F) B) and C)

Question 16

Human embryos have a developmental stage during which they have a tail and pharyngeal pouches (those pouches develop into gills in fish) .How can we explain these characteristics of human embryos?

Accepted Answer

A)   Human embryos need a tail and gills to breathe during development in the placenta.
B)   Human embryos spend time in the water where tails and gills are useful.
C)   Human embryos share a common ancestor who had gills.
D)   Both A and B are correct.E) All of the above
F) B) and D)

Question 17

A weed that exhibits resistance to an herbicide ________.

Accepted Answer

A)   developed the resistance in response to the herbicide
B)   mutated when exposed to the herbicide
C)   inherited the gene that made it resistant to the herbicide
D)   is less likely to pass on the gene to the next generationE) B) and C)
F) A) and B)

Question 18

When did life first appear on the planet?

Accepted Answer

A)   3.5 billion years ago
B)   2.1 billion years ago
C)   3.5 million years ago
D)   2.1 million years agoE) None of the above
F) A) and C)

Question 19

Which two observations led Darwin to conclude that there is competition for survival?

Accepted Answer

A)   Overproduction and limited resources
B)   Fossils and mutations
C)   Gene and allele differences in organisms
D)   Natural selection and descent with modificationE) C) and D)
F) B) and D)

Question 20

Natural selection acts on ________,and ________ evolve.

Accepted Answer

A)   individuals; individuals
B)   individuals; populations
C)   populations; populations
D)   populations; individualsE) A) and B)
F) All of the above

Exam 7: Darwinian Evolution

The slow drifting of sections of the earth's crust,sometimes separating,other times colliding,is known as ________.

Correct AnswerverifiedShow Answer

If a changing environment increases rates of evolution,why do we see an increase in extinction rates following rapid global catastrophes?

Correct AnswerverifiedEither the change is too swift...View AnswerShow Answer

When did life first appear on the planet?

Correct AnswerverifiedShow Answer

Before Darwin published his work,Lamarck and others had suggested mechanisms for evolution.By what means did Darwin propose species evolved over time?

Correct AnswerverifiedShow Answer

What is the leading hypothesis for what might have brought about the extinction of the dinosaurs?

Correct AnswerverifiedShow Answer

Which of the following most often should lead to allopatric speciation?

Correct AnswerverifiedShow Answer

What term describes the failure of one species' sperm to fertilize the egg of a different species?

Correct AnswerverifiedShow Answer

Which grouping includes all of the protists?

Correct AnswerverifiedShow Answer

The eastern meadowlark and the western meadowlark are two bird species that look very similar to each other.Why do biologists not consider them the same species?

Correct AnswerverifiedShow Answer

The rapid diversification of species seen in the fossil record followed by long periods of stasis is part of the ________ model of evolution.

Correct AnswerverifiedShow Answer

Human embryos have a developmental stage during which they have a tail and pharyngeal pouches (those pouches develop into gills in fish) .How can we explain these characteristics of human embryos?

Correct AnswerverifiedShow Answer

Certain traits will have been lost from the gene pool forever.Some traits,such as red hair or double-jointed thumbs,may be obvious.Others,such as the ability to process cholesterol or an allergy to peanuts,will be less obvious.This loss of diversity in a reduced population is called ________.

Correct AnswerverifiedShow Answer

A weed that exhibits resistance to an herbicide ________.

Correct AnswerverifiedShow Answer

Which two observations led Darwin to conclude that there is competition for survival?

Correct AnswerverifiedShow Answer

What defines a population in evolution?

Correct AnswerverifiedShow Answer

Which of the following mechanisms can drive evolution?

Correct AnswerverifiedShow Answer

Which of the following best defines microevolution?

Correct AnswerverifiedShow Answer

Which of the following are considered fossils?

Correct AnswerverifiedShow Answer

Natural selection acts on ________,and ________ evolve.

Correct AnswerverifiedShow Answer

Of those listed below,which category of classification is the most narrow?

Correct AnswerverifiedShow Answer

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Either the change is too swift...
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Natural selection acts on ,and evolve.

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Correct Answer
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