Question 1

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) C) and E)

Question 2

Plants are naturally able to reproduce asexually because they contain meristematic tissue.

Accepted Answer

A) True 
 B)False

Question 3

Because tomatoes contain seeds they are classified as a

Accepted Answer

A)   dry fruit.
B)   pome.
C)   stone fruit.
D)   berry.
E)   legume.F) None of the above
G) A) and D)

Question 4

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 C)
G) None of the above

Question 5

During germination, which cellular structure will exhibit positive gravitrophism and grow downward?

Accepted Answer

A)   embryonic root
B)   embryonic shoot
C)   cotyledon
D)   shoot
E)   seed nucleusF) A) and B)
G) B) and E)

Question 6

If ethylene is applied to a bushel of apples, what is most likely to occur?

Accepted Answer

A)   The fruit will ripen.
B)   The apple seeds will go into a state of dormancy.
C)   The seeds will germinate.
D)   The fruit will retain its water for a longer period of time.
E)   The apple stem will fall off.F) A) and C)
G) A) and B)

Question 7

An advantage of using genetically modified plants is that they

Accepted Answer

A)   are genetically identical to the parent plant.
B)   grow much more quickly.
C)   may possess superior characteristics to the original plant.
D)   are always virus-free.
E)   cannot undergo asexual reproduction.F) D) and E)
G) C) and D)

Question 8

Which of the following is not an advantage of genetically engineered plants?

Accepted Answer

A)   decreased yield
B)   herbicide resistance
C)   salt tolerance
D)   drought tolerance
E)   disease protectionF) B) and E)
G) A) and C)

Question 9

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; flower
D)   flowers; gametophyte
E)   sporophyte; flowerF) None of the above
G) A) and E)

Question 10

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 E)
G) A) and D)

Question 11

The aging process in plants is known as

Accepted Answer

A)   senescence.
B)   dormancy.
C)   abscission.
D)   apical dominance.
E)   gravitropism.F) A) and E)
G) B) and E)

Question 12

What is the role of auxin in regards to plant growth?

Accepted Answer

A)   Auxin softens the cell wall enabling the cells to grow.
B)   Auxin disintegrates the cell wall in a plant allowing two cells to enlarge into one.
C)   Auxin will stunt plant growth.
D)   Auxin will increase the rate at which plant cells can grow.
E)   Auxin will decrease the rate at which plant cells grow.F) D) and E)
G) A) and D)

Question 13

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) A) and B)
G) C) and D)

Question 14

Alternation of generations means that a diploid sporophyte produces haploid spores by meiosis, and a haploid gametophyte produces gametes by mitosis.

Accepted Answer

A) True 
 B)False

Question 15

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) A) and B)
G) C) and D)

Question 16

Which fruit is most likely to be dispersed by the wind?

Accepted Answer

A)   dandelion
B)   apples
C)   walnut
D)   cocklebur
E)   cherryF) B) and E)
G) A) and B)

Question 17

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

Accepted Answer

A)   complete.
B)   incomplete.
C)   monoecious.
D)   dioecious.
E)   bisexual.F) None of the above
G) C) and D)

Question 18

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 E)
G) A) and D)

Question 19

The application of abscisic acid to a plant may prevent fruit maturation.

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 21: Plant Responses and Reproduction

During germination, which cellular structure will exhibit positive gravitrophism and grow downward?

Correct AnswerverifiedShow Answer

Which of the following is not an advantage of genetically engineered plants?

Correct AnswerverifiedShow Answer

Auxin causes bending in stems and roots by

Correct AnswerverifiedShow Answer

Plants are naturally able to reproduce asexually because they contain meristematic tissue.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

An advantage of using genetically modified plants is that they

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Ethylene stimulates fruit ripening by stimulating

Correct AnswerverifiedShow Answer

What is the role of auxin in regards to plant growth?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which fruit is most likely to be dispersed by the wind?

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

Alternation of generations means that a diploid sporophyte produces haploid spores by meiosis, and a haploid gametophyte produces gametes by mitosis.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The aging process in plants is known as

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If ethylene is applied to a bushel of apples, what is most likely to occur?

Correct AnswerverifiedShow Answer

Because tomatoes contain seeds they are classified as a

Correct AnswerverifiedShow Answer

The application of abscisic acid to a plant may prevent fruit maturation.

Correct AnswerverifiedShow Answer

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

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

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