Question 1

When a plant is experiencing water stress,

Accepted Answer

A)   auxin will shut down vessel elements.
B)   gibberellins will stimulate growth of root hairs.
C)   abscisic acid will stimulate closure of stomata.
D)   ethylene will increase water flow in vessel elements.
E)   cytokinins will stimulate elongation of stems and growth of new leaves.F) A) and D)
G) C) and D)

Question 2

Which of the following is an incorrect match of structure to function?

Accepted Answer

A)   sepal - protection of flower
B)   filament - produces pollen
C)   petal - attracts pollinator
D)   ovary - contains female gametophyte
E)   stigma - allows pollen to adhereF) D) and E)
G) A) and E)

Question 3

A winter bud begins winter with an amount of abscisic acid to maintain dormancy. Dormancy is broken in the spring because of

Accepted Answer

A)   a gradual reduction in abscisic acid over winter.
B)   an increase of abscisic acid production by the meristem within the bud.
C)   an increase in cytokinin in the leaves.
D)   a gradual reduction of auxin in the shoot tip.
E)   a gradual increase in ethylene production by the meristem within the bud.F) B) and C)
G) C) and E)

Question 4

A gardener wants to stimulate branching but keep the apical meristem intact so that the plants will also grow in height. What hormone should be applied?

Accepted Answer

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

Question 5

Since plant sperm are nonflagellated, how do they reach the ovule from the stigma?

Accepted Answer

A)   swimming in water
B)   delivered by a pollen tube
C)   carried on air currents
D)   delivered by insects
E)   ovules are delivered to the stigmaF) D) and E)
G) C) and E)

Question 6

Plants undergo an alternation of generations. The _______ produces spores, which develop into the ______.

Accepted Answer

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

Question 7

Plants with both female and male flowers on the same plant are called _________.

Accepted Answer

A)   complete
B)   incomplete
C)   monoecious
D)   dioecious
E)   bisexualF) B) and E)
G) C) and D)

Question 8

What is the main advantage of using the meristem culture technique over other methods of asexual reproduction?

Accepted Answer

A)   Meristem tissue is virus free
B)   Meristem tissue is the most abundant tissue on the plant
C)   This technique produces exact clones
D)   Other culture techniques are not accepted by the public
E)   This technique is relatively inexpensive to doF) All of the above
G) A) and E)

Question 9

Ethylene stimulates fruit ripening by stimulating

Accepted Answer

A)   the transport of hydrogen ions out of the cell.
B)   the production of amylase for starch breakdown.
C)   bacterial activity which softens the fruit.
D)   cellulase to break down cellulose in cell walls.
E)   mitosis of cells within the fruit to promote fruit growth.F) A) and B)
G) None of the above

Question 10

Plant reproduction by tissue culture differs from reproduction by meristem culture because

Accepted Answer

A)   plants produced by meristem culture are clones, whereas tissue culture does not produce genetically identical plants.
B)   tissue culture requires cells from a plant's root system, whereas any cell of a plant may be used for meristem culture.
C)   tissue culture propagation produces clonal plants, whereas meristem culture produces plants that may be genetically different.
D)   tissue culture produces plants that are virus-free, whereas plants produced by meristem culture may not be virus-free.
E)   meristem culture requires removal of the plant cell walls, whereas tissue culture does not.F) A) and B)
G) A) and C)

Question 11

Which of the following is not a function of the flower in an angiosperm?

Accepted Answer

A)   producing fruit
B)   protection of the gametophyte
C)   attracting pollinators
D)   producing spores
E)   supporting the plantF) None of the above
G) C) and D)

Question 12

A fleshy fruit is more likely to use which of the following methods of seed dispersal?

Accepted Answer

A)   eaten by animals and seeds passed through feces
B)   blown by wind
C)   stuck to fur of mammal and carried
D)   fruit bursts when mature, spreading seeds outward
E)   drop and remain near parent plantF) A) and D)
G) A) and E)

Question 13

Gametophytes of flowering plants are produced within the flower.

Accepted Answer

A) True 
 B)False

Question 14

In a eudicot seed, the zygote becomes the _____, while the _______ is derived from the endosperm.

Accepted Answer

A)   embryo; seed coat
B)   cotyledons; embryo
C)   embryo; cotyledons
D)   embryo; stored food
E)   stored food; seed coatF) B) and E)
G) A) and B)

Exam 21: Plant Structure and Function

Which of the following is not a function of the flower in an angiosperm?

Correct Answer
verified

Since plant sperm are nonflagellated, how do they reach the ovule from the stigma?

Correct Answer
verified

Which of the following is an incorrect match of structure to function?

Correct Answer
verified

A winter bud begins winter with an amount of abscisic acid to maintain dormancy. Dormancy is broken in the spring because of

Correct Answer
verified

Plants undergo an alternation of generations. The _ produces spores, which develop into the .

Correct Answer
verified

Ethylene stimulates fruit ripening by stimulating

Correct Answer
verified

When a plant is experiencing water stress,

Correct Answer
verified

What is the main advantage of using the meristem culture technique over other methods of asexual reproduction?

Correct Answer
verified

Plant reproduction by tissue culture differs from reproduction by meristem culture because

Correct Answer
verified

A fleshy fruit is more likely to use which of the following methods of seed dispersal?

Correct Answer
verified

Plants with both female and male flowers on the same plant are called _________.

Correct Answer
verified

Gametophytes of flowering plants are produced within the flower.

Correct Answer
verified

A gardener wants to stimulate branching but keep the apical meristem intact so that the plants will also grow in height. What hormone should be applied?

Correct Answer
verified

In a eudicot seed, the zygote becomes the _, while the ___ is derived from the endosperm.

Correct Answer
verified

Exam 21: Plant Structure and Function

Which of the following is not a function of the flower in an angiosperm?

Correct AnswerverifiedShow Answer

Since plant sperm are nonflagellated, how do they reach the ovule from the stigma?

Correct AnswerverifiedShow Answer

Which of the following is an incorrect match of structure to function?

Correct AnswerverifiedShow Answer

A winter bud begins winter with an amount of abscisic acid to maintain dormancy. Dormancy is broken in the spring because of

Correct AnswerverifiedShow Answer

Plants undergo an alternation of generations. The _______ produces spores, which develop into the ______.

Correct AnswerverifiedShow Answer

Ethylene stimulates fruit ripening by stimulating

Correct AnswerverifiedShow Answer

When a plant is experiencing water stress,

Correct AnswerverifiedShow Answer

What is the main advantage of using the meristem culture technique over other methods of asexual reproduction?

Correct AnswerverifiedShow Answer

Plant reproduction by tissue culture differs from reproduction by meristem culture because

Correct AnswerverifiedShow Answer

A fleshy fruit is more likely to use which of the following methods of seed dispersal?

Correct AnswerverifiedShow Answer

Plants with both female and male flowers on the same plant are called _________.

Correct AnswerverifiedShow Answer

Gametophytes of flowering plants are produced within the flower.

Correct AnswerverifiedShow Answer

A gardener wants to stimulate branching but keep the apical meristem intact so that the plants will also grow in height. What hormone should be applied?

Correct AnswerverifiedShow Answer

In a eudicot seed, the zygote becomes the _____, while the _______ is derived from the endosperm.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Plants undergo an alternation of generations. The _ produces spores, which develop into the .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

In a eudicot seed, the zygote becomes the _, while the ___ is derived from the endosperm.

Correct Answer
verified