Question 1

A plant that is dioecious is incapable of which of the following?

Accepted Answer

A)   cross-pollination
B)   double fertilization
C)   self-pollination
D)   gametophyte production
E)   pollen productionF) All of the above
G) A) and B) C

Question 2

A long day/short night plant would most likely

Accepted Answer

A)   bloom only in the fall.
B)   bloom only in the spring.
C)   bloom only in the summer.
D)   bloom only at night.
E)   bloom only during the day.F) B) and D)
G) B) and C)

Question 3

Plants undergo an alternation of generations. The _______ produces gametes that fuse to produce a new ______.

Accepted Answer

A)   sporophyte; gametophyte
B)   gametophyte; sporophyte
C)   gametophyte; flowers
D)   flowers; gametophyte
E)   sporophyte; flowersF) A) and B)
G) C) and D)

Question 4

During pollen grain germination the two cells will develop into the ______ and _______.

Accepted Answer

A)   pollen tube & sperm
B)   pollen tube & egg
C)   ovule & sperm
D)   fruit & seeds
E)   pollen tube & zygoteF) C) and D)
G) A) and D) A

Question 5

The products of double fertilization in the _____ are a 2n ____ and a 3n ____.

Accepted Answer

A)   ovary; zygote; endosperm
B)   ovary; endosperm; zygote
C)   anther; zygote; endosperm
D)   anther; endosperm; zygote
E)   stigma; endosperm; zygoteF) C) and D)
G) D) and E)

Question 6

Which of the following events will occur if gibberellins are applied to barley?

Accepted Answer

A)   The lateral meristems will be inhibited and the plant will grow upwards.
B)   The starchy endosperm will be broken down and converted into sugars for the developing embryo.
C)   The stomata will remain closed to avoid the loss of water from the plant.
D)   Plant growth is accelerated by promoting cell division.
E)   Cellulase is produced which will stimulate the breakdown of the cellulose in the cell walls.F) A) and C)
G) A) and E) B

Question 7

A monocot seed consists of a seed coat, two cotyledons, an embryo, and an endosperm.

Accepted Answer

A) True 
 B)False

Question 8

Some citizens are concerned about the use of genetically modified plants because they

Accepted Answer

A)   are better for the environment.
B)   may harm the environment.
C)   are less nutritious than the original plant.
D)   are genetically identical.
E)   do not grow as well as the original plant.F) C) and E)
G) B) and C)

Question 9

Peaches may be ripened at home by enclosing them in a paper bag. This is due to the production of which hormone?

Accepted Answer

A)   auxin
B)   cytokinin
C)   ethylene
D)   abscisic acid
E)   gibberellinsF) A) and E)
G) A) and C)

Question 10

Which of the following is not a method of asexual reproduction in plants?

Accepted Answer

A)   rhizomes
B)   stolons
C)   suckers
D)   tubers
E)   dry fruitsF) B) and D)
G) A) and D)

Question 11

Which of the following plant hormones promotes cell division?

Accepted Answer

A)   cytokinins
B)   auxin
C)   gibberellins
D)   abscisic acid
E)   ethyleneF) B) and D)
G) None of the above

Question 12

Plants detect the presence of light using ________, whereas day length is detected using ______.

Accepted Answer

A)   auxin; gibberellin
B)   phytochrome; auxin
C)   auxin; phytochrome
D)   phytochrome; gibberellin
E)   gibberellin; auxinF) B) and E)
G) All of the above

Question 13

An incomplete flower may lack a carpel.

Accepted Answer

A) True 
 B)False

Question 14

Auxin causes bending in stems and roots by

Accepted Answer

A)   causing cell elongation.
B)   preventing cell elongation.
C)   breaking down cell walls.
D)   causing cell shrinkage.
E)   inhibiting lateral bud growth.F) A) and B)
G) All of the above

Question 15

The microspores develop into microgametophytes in the

Accepted Answer

A)   anther.
B)   filament.
C)   stigma.
D)   style.
E)   ovary.F) A) and B)
G) C) and D)

Question 16

The application of auxin to a seed may cause it to germinate.

Accepted Answer

A) True 
 B)False

Question 17

Phytochrome red (Pr)  differs from phytochrome far-red (Pfr)  in that

Accepted Answer

A)   Pr is converted to Pfr during the nighttime.
B)   Pr is converted to Pfr by absorbing sunlight.
C)   Pfr is converted to Pr by absorbing sunlight.
D)   Pfr is converted to Pr by absorbing far-red light that is available at dusk.
E)   Pr is converted to Pfr by absorbing far-red light, which is available only during full daylight.F) A) and E)
G) B) and E)

Question 18

Auxin produced by which portion of the plant is responsible for the development of fruit?

Accepted Answer

A)   apical meristem
B)   seeds
C)   vascular cambium
D)   root
E)   lateral budF) B) and E)
G) A) and B)

Question 19

Which of the following does not represent a possible use for genetically modified crops?

Accepted Answer

A)   vaccine production
B)   improved yield
C)   herbicide resistance
D)   mass reproduction by asexual means only
E)   improved nutritional valueF) B) and E)
G) B) and C)

Question 20

You wish to change the growth pattern of the shrubs in your yard to give them a fuller, more bushy appearance. This could be accomplished by

Accepted Answer

A)   pruning the shoot tip.
B)   pruning the lateral buds.
C)   pruning the lateral buds and applying gibberellins.
D)   applying auxin to the roots.
E)   pruning the shoot tip and applying auxin to the shoot.F) A) and B)
G) B) and D)

Exam 21: Plant Structure and Function

A plant that is dioecious is incapable of which of the following?

Correct AnswerverifiedC

A long day/short night plant would most likely

Correct AnswerverifiedShow Answer

Plants undergo an alternation of generations. The _______ produces gametes that fuse to produce a new ______.

Correct AnswerverifiedShow Answer

During pollen grain germination the two cells will develop into the ______ and _______.

Correct AnswerverifiedA

The products of double fertilization in the _____ are a 2n ____ and a 3n ____.

Correct AnswerverifiedShow Answer

Which of the following events will occur if gibberellins are applied to barley?

Correct AnswerverifiedB

A monocot seed consists of a seed coat, two cotyledons, an embryo, and an endosperm.

Correct AnswerverifiedShow Answer

Some citizens are concerned about the use of genetically modified plants because they

Correct AnswerverifiedShow Answer

Peaches may be ripened at home by enclosing them in a paper bag. This is due to the production of which hormone?

Correct AnswerverifiedShow Answer

Which of the following is not a method of asexual reproduction in plants?

Correct AnswerverifiedShow Answer

Which of the following plant hormones promotes cell division?

Correct AnswerverifiedShow Answer

Plants detect the presence of light using ________, whereas day length is detected using ______.

Correct AnswerverifiedShow Answer

An incomplete flower may lack a carpel.

Correct AnswerverifiedShow Answer

Auxin causes bending in stems and roots by

Correct AnswerverifiedShow Answer

The microspores develop into microgametophytes in the

Correct AnswerverifiedShow Answer

The application of auxin to a seed may cause it to germinate.

Correct AnswerverifiedShow Answer

Phytochrome red (Pr) differs from phytochrome far-red (Pfr) in that

Correct AnswerverifiedShow Answer

Auxin produced by which portion of the plant is responsible for the development of fruit?

Correct AnswerverifiedShow Answer

Which of the following does not represent a possible use for genetically modified crops?

Correct AnswerverifiedShow Answer

You wish to change the growth pattern of the shrubs in your yard to give them a fuller, more bushy appearance. This could be accomplished by

Correct AnswerverifiedShow Answer

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C

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Plants undergo an alternation of generations. The _ produces gametes that fuse to produce a new .

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During pollen grain germination the two cells will develop into the and _.

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A

The products of double fertilization in the _ are a 2n and a 3n .

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B

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Plants detect the presence of light using __, whereas day length is detected using .

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Phytochrome red (P_r) differs from phytochrome far-red (P_fr) in that

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