Question 1

Which of the following characteristics do land plants share with their closest algal relatives?

Accepted Answer

A)  cytoplasm that may be continuously connected between whole populations of cells
B)  an external waxy skin separating the plant body from its environment
C)  multicellular haploid and diploid generations
D)  populations of apical cells that maintain their meristematic identityE) A) and B)
F) B) and C)

Question 2

The persistent and photosynthetic generation of bryophytes is, in general, constrained to be close to the ground:

Accepted Answer

A)  because bryophytes are unable to produce cells specialized for long-distance transport of sugar or water.
B)  in order to successfully disperse gametes.
C)  because only the sporophyte stage has the genetic potential to grow in height.
D)  because their spores require environmental water to disperse.E) A) and B)
F) B) and C)

Question 3

The early branching angiosperms have _____ diversity than later branching groups.

Accepted Answer

A)  more
B)  less
C)  the sameD) None of the above
E) All of the above

Question 4

Approximately 40% of living ferns are tropical epiphytes, a fact that supports the hypothesis that:

Accepted Answer

A)  the origin and eventual domination of angiosperms in tropical forests both displaced and created new opportunities for other plant lineages.
B)  plant lineages are conservative in their basic ecology and tend to diversify in the same environments in which they originated.
C)  most fern diversity is in temperate forests.
D)  epiphytic ferns are all that remain of an ancient diversification of ferns that preceded the evolution of angiosperms.E) All of the above
F) B) and C)

Question 5

Most parasitic plants are eudicots.

Accepted Answer

A) True 
 B)False

Question 6

The fact that early diverging angiosperms with vessels did not conduct water at higher rates than early diverging angiosperms that lacked vessels supports the hypothesis that:

Accepted Answer

A)  differences in xylem structure relative to gymnosperms did not contribute in an important way to the success of early angiosperms.
B)  the change in angiosperms from wood composed of tracheids to wood composed of vessels and fibers did not have much evolutionary impact on angiosperms until the diversification of monocots and eudicots.
C)  the growth-form flexibility conferred by xylem with fibers was more important for the ecological success of early angiosperms than the potentially high rates of transpiration made possible by vessels.
D)  angiosperms first evolved under shady and moist conditions.E) A) and B)
F) None of the above

Question 7

Which group of gymnosperms has only a single, living representative species?

Accepted Answer

A)  cycads
B)  ginkgos
C)  conifers
D)  gnetophytes
E)  lycopodiumF) None of the above
G) C) and D)

Question 8

Which statements are likely to have been TRUE of the earliest angiosperms?

Accepted Answer

A)  The presence of vessels allowed them to form a tall, emergent layer in tropical forests.
B)  The evolutionary innovation of flowers allowed them to be much more diverse than other seed plants radiating at this time.
C)  Animal pollination made possible by flowers allowed them to survive at low density in tropical forest understories.
D)  They evolved in shady and wet conditions, growing toward the side to exploit light gaps in the canopy overhead.E) All of the above
F) None of the above

Exam 33: Plant Diversity

Most parasitic plants are eudicots.

Correct Answer
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Approximately 40% of living ferns are tropical epiphytes, a fact that supports the hypothesis that:

Correct Answer
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Which statements are likely to have been TRUE of the earliest angiosperms?

Correct Answer
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Which group of gymnosperms has only a single, living representative species?

Correct Answer
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The persistent and photosynthetic generation of bryophytes is, in general, constrained to be close to the ground:

Correct Answer
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The early branching angiosperms have _____ diversity than later branching groups.

Correct Answer
verified

The fact that early diverging angiosperms with vessels did not conduct water at higher rates than early diverging angiosperms that lacked vessels supports the hypothesis that:

Correct Answer
verified

Which of the following characteristics do land plants share with their closest algal relatives?

Correct Answer
verified

Exam 33: Plant Diversity

Most parasitic plants are eudicots.

Correct AnswerverifiedShow Answer

Approximately 40% of living ferns are tropical epiphytes, a fact that supports the hypothesis that:

Correct AnswerverifiedShow Answer

Which statements are likely to have been TRUE of the earliest angiosperms?

Correct AnswerverifiedShow Answer

Which group of gymnosperms has only a single, living representative species?

Correct AnswerverifiedShow Answer

The persistent and photosynthetic generation of bryophytes is, in general, constrained to be close to the ground:

Correct AnswerverifiedShow Answer

The early branching angiosperms have _____ diversity than later branching groups.

Correct AnswerverifiedShow Answer

The fact that early diverging angiosperms with vessels did not conduct water at higher rates than early diverging angiosperms that lacked vessels supports the hypothesis that:

Correct AnswerverifiedShow Answer

Which of the following characteristics do land plants share with their closest algal relatives?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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