Question 1

When scientists breed for genes for resistance to pathogens or herbivores they are usually limited to making mutations for this to happen.

Accepted Answer

A) True 
 B)False

Question 2

Auxins are able to move vertically; however, they are restricted in movement laterally.

Accepted Answer

A) True 
 B)False

Question 3

Plants grow towards light because they sense a need for light.

Accepted Answer

A) True 
 B)False

Question 4

When phytochromes mediate plant responses to shading they could cause:

Accepted Answer

A)   leaves to fall off
B)   leaves to turn towards the light
C)   no influence on leaves
D)   extension of shade leaves into the light
E)   leaves to turn brownF) C) and D)
G) A) and B)

Question 5

Phototropism is a plant response controlled largely by which color of light?

Accepted Answer

A)   red
B)   blue
C)   violet
D)   green
E)   None of the choices is correctF) A) and B)
G) B) and E)

Question 6

The production of roots on cuttings of a houseplant is promoted when auxins are applied to the cut ends.

Accepted Answer

A) True 
 B)False

Question 7

If a plant is bending towards the light, one would expect which enzymes to have increased in activity?

Accepted Answer

A)   auxins
B)   gibberellins
C)   wall-loosening enzymes
D)   ethylene
E)   None of these is correctF) A) and E)
G) D) and E)

Question 8

Gibberellins were discovered as a result of:

Accepted Answer

A)   extractions of this hormone from plants
B)   a fungal disease on rice
C)   an application of the hormone accidentally
D)   many years of experiments to isolate it from plants
E)   discovery of its relationship to auxinsF) A) and E)
G) D) and E)

Question 9

Which one of the following is most correct concerning plant behavior?

Accepted Answer

A)   It is influenced by external factors such as electrical impulses.
B)   It is influenced by internal factors such as plant growth regulators.
C)   It is influenced by internal factors such as gravity.
D)   It is influenced by external factors such as microRNAs.
E)   None of these choices is correct.F) A) and D)
G) A) and C) B

Question 10

If plant breeders were to breed plants for release of certain compounds that attracted wasps this could help protect the plants from

Accepted Answer

A)   other insects
B)   herbivores
C)   certain caterpillars
D)   All of these are correct.
E)   None of these is correct.F) A) and B)
G) B) and C)

Question 11

One of the important roles of ethylene in plant development is that it induces radial swelling in:

Accepted Answer

A)   root and stem seedling development
B)   embryo expansion
C)   seed germination
D)   stem elongations
E)   auxin productionF) A) and D)
G) A) and C)

Question 12

Which of the following is a plant behavior that is influenced by light?

Accepted Answer

A)   solar tracking
B)   phototropism
C)   flowering
D)   seed germination
E)   All of the choices are trueF) A) and B)
G) C) and E)

Question 13

Which of the following is considered to be a plant behavior?

Accepted Answer

A)   response to sunlight
B)   response to plant hormones
C)   response to touch
D)   response to gravity
E)   all of the choicesF) None of the above
G) A) and E)

Question 14

Plant behaviors are not always easily observed because they:

Accepted Answer

A)   may occur at short intervals
B)   are mostly internal to the plant
C)   are mostly caused by internal organisms
D)   are not observable by the human eye
E)   are only observable with a microscopeF) B) and C)
G) A) and E)

Question 15

The best place to find gibberellins in a plant would be in the:

Accepted Answer

A)   apical buds
B)   roots
C)   young leaves
D)   seed embryos
E)   All of these are correctF) A) and D)
G) A) and B) E

Question 16

Generally plants are unable to produce chemicals that travel throughout the plant to protect against pathogens; most defense is only in localized areas.

Accepted Answer

A) True 
 B)False

Question 17

Cytokinins are transported through the xylem to meristems where they aid in cell elongation.

Accepted Answer

A) True 
 B)False

Question 18

Which one of the following would be the effect of salty environments on plants?

Accepted Answer

A)   loss of water
B)   damage to membranes
C)   uptake of salt that causes toxicity
D)   water intake that causes turgid cells
E)   damage to plant proteinsF) B) and D)
G) A) and B) B

Question 19

Use of cytokinins has had wide application in the horticultural industry because cytokinins are used in:

Accepted Answer

A)   tissue cultures
B)   fruit production
C)   stem elongation
D)   flower maturation
E)   root developmentF) B) and C)
G) A) and B)

Question 20

If growers want fruit to drop from trees simultaneously they might apply:

Accepted Answer

A)   auxins
B)   ethylene
C)   abscisic acid
D)   gibberellins
E)   brassinosteroidsF) B) and E)
G) A) and B)

Exam 36: Flowering Plants: Behavior

When scientists breed for genes for resistance to pathogens or herbivores they are usually limited to making mutations for this to happen.

Correct AnswerverifiedShow Answer

Auxins are able to move vertically; however, they are restricted in movement laterally.

Correct AnswerverifiedShow Answer

Plants grow towards light because they sense a need for light.

Correct AnswerverifiedShow Answer

When phytochromes mediate plant responses to shading they could cause:

Correct AnswerverifiedShow Answer

Phototropism is a plant response controlled largely by which color of light?

Correct AnswerverifiedShow Answer

The production of roots on cuttings of a houseplant is promoted when auxins are applied to the cut ends.

Correct AnswerverifiedShow Answer

If a plant is bending towards the light, one would expect which enzymes to have increased in activity?

Correct AnswerverifiedShow Answer

Gibberellins were discovered as a result of:

Correct AnswerverifiedShow Answer

Which one of the following is most correct concerning plant behavior?

Correct AnswerverifiedB

If plant breeders were to breed plants for release of certain compounds that attracted wasps this could help protect the plants from

Correct AnswerverifiedShow Answer

One of the important roles of ethylene in plant development is that it induces radial swelling in:

Correct AnswerverifiedShow Answer

Which of the following is a plant behavior that is influenced by light?

Correct AnswerverifiedShow Answer

Which of the following is considered to be a plant behavior?

Correct AnswerverifiedShow Answer

Plant behaviors are not always easily observed because they:

Correct AnswerverifiedShow Answer

The best place to find gibberellins in a plant would be in the:

Correct AnswerverifiedE

Generally plants are unable to produce chemicals that travel throughout the plant to protect against pathogens; most defense is only in localized areas.

Correct AnswerverifiedShow Answer

Cytokinins are transported through the xylem to meristems where they aid in cell elongation.

Correct AnswerverifiedShow Answer

Which one of the following would be the effect of salty environments on plants?

Correct AnswerverifiedB

Use of cytokinins has had wide application in the horticultural industry because cytokinins are used in:

Correct AnswerverifiedShow Answer

If growers want fruit to drop from trees simultaneously they might apply:

Correct AnswerverifiedShow Answer

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B

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E

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B

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