Control Of Plant Growth & Responses Outline Quiz
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Did you know that you could control how you want a specific plant to grow in or outside your house? One way of controlling this growth is through weeding or pruning. How knowledgeable are you when it comes to control of plant growth and responses? Take the quiz and find out!
- 1.Which of these stimuli causes roots to grow downward?
- A.
Negative gravitropism
- B.
Positive gravitropism
- C.
Thigmotropism
- D.
Negative phototropism
- E.
Positive phototropism
- 2.Which of these stimuli causes a pea vine to twine around a wire support?
- A.
Negative gravitropism
- B.
Positive gravitropism
- C.
Thigmotropism
- D.
Negative phototropism
- E.
Positive phototropism
- 3.Plant hormones are generally produced in _______ tissues.
- A.
Cortical (cortex)
- B.
Epidermal
- C.
Meristem
- D.
Vascular
- E.
Floral
- 4.Which statement about plant hormones is NOT true?
- A.
Plant hormones include at least one form that is a gas.
- B.
Each naturally occurring hormone has a specific chemical structure.
- C.
Hormones are among the principal internal regulators of plant growth.
- D.
Responses to plant hormones may be observed in nearly any part of a plant.
- E.
All known growth regulators of plant activities are chemicals produced naturally in plants.
- 5.Dormancy in seeds and buds can be broken by application of which plant hormone?
- A.
Abscisic acid
- B.
Auxin
- C.
Cytokinin
- D.
Ethylene
- E.
Gibberellin
- 6.Application of which hormone prevents plant tissues from senescing, or aging?
- A.
Abscisic acid
- B.
Auxin
- C.
Cytokinin
- D.
Ethylene
- E.
Gibberellin
- 7.Which plant hormone stimulates the ripening of fruit and inhibits plant growth?
- A.
Abscisic acid
- B.
Auxin
- C.
Cytokinin
- D.
Ethylene
- E.
Gibberellin
- 8.Which plant hormone is called the stress hormone because it produces dormancy in seeds and buds?
- A.
Abscisic acid
- B.
Auxin
- C.
Cytokinin
- D.
Ethylene
- E.
Gibberellin
- 9.Which is NOT a physiological change related to photoperiodism?
- A.
Seed germination
- B.
Root branching
- C.
Breaking bud dormancy
- D.
Some flowering
- E.
Onset of senescence
- 10.If a plant is laid on its side, cells on the lower side of the stem will respond to gravity and elongate, making the stem turn so that it continues to grow upward.
- A.
True
- B.
False
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