Chapter 40 – Sensory Systems in Plants
Chapter 40
Sensory Systems in Plants
Multiple Choice Questions
1. If temperatures suddenly rise 5 to 10º C, __________ proteins are produced to help
stabilize other proteins.
2. Rapid turgor pressure changes in specialized multicellular swellings called ____________
are associated with leaves that move in response to touch or light.
Chapter 40 – Sensory Systems in Plants
3. Mature plants may become __________ in dry or cold seasons in order to survive long
periods that are unfavorable for growth.
4. _______________ are chemical substances produced in small quantities in one part of an
organism and then transported to another part of the organism, where they bring about
physiological responses.
5. Gibberellins affect many processes in plants. In seeds embryos, gibberellins are believed to
signal hydrolysis of the stored food reserves through inducing the synthesis of the enzyme –
amylase. Which food source are gibberellins targeting with the release of –amylase?
Chapter 40 – Sensory Systems in Plants
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you already know about hormone and enzyme function in plants? How does it
relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 40 – Sensory Systems in Plants
6. A plant sustains pathogen-induced damage to one of its cell walls. A gene-for-gene
response soon follows and the tissue surrounding the injury soon dies. Which signaling
molecules facilitated this response?
Chapter 40 – Sensory Systems in Plants
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you already know about injury response in plants? How does it relate to the
question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 40 – Sensory Systems in Plants
7. ________________ is directional growth responses of plants to a unidirectional source of
light.
8. Charles Darwin and his son experimented with which plant growth response?
Chapter 40 – Sensory Systems in Plants
9. The plant hormones known as ___________ may have an evolutionary origin in the
common ancestor to both plants and animals.
10. Which cell structure is most likely responsible for sensing gravity?
11. While touring a farm, the farmer tells you that she uses cytokinin to increase crop
productivity. But, from biology class you know that cytokinin alone has no effect on
parenchyma cells. What other substance is the farmer most likely using in conjunction with
cytokinin?
Chapter 40 – Sensory Systems in Plants
12. While touring the ancient Egypt exhibit at the local history museum, you learn that
ancient Egyptians would slash figs in order to stimulate ripening. Based on your knowledge of
plant hormones you hypothesize that wounding the figs must release:
Chapter 40 – Sensory Systems in Plants
Clarify Question
•
What is the key concept addressed by the question?
o The question is asking about chemical influences on fruit ripening.
•
What type of thinking is required?
fruit.
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you already know about fruit ripening? How does it relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 40 – Sensory Systems in Plants
13. Abscisic acid (ABA) is synthesized in the roots in response to decreased soil water
potential. ABA then translocates to the leaves, where it rapidly alters the osmotic potential of
guard cells. What effect would this have on the stomata and the process of transpiration?
Chapter 40 – Sensory Systems in Plants
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you already know about the relationship between transpiration and stomata?
How does it relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 40 – Sensory Systems in Plants
14. The elongation of stems is stimulated by
15. When Darwin covered the tip of a grass seedling with metal foil and then illuminated it
from one side, what happened to the seedling?
16. One effect of auxin, which triggers the elongation of cells, is to affect cell walls by
increasing their
Chapter 40 – Sensory Systems in Plants
17. When seeds are removed from strawberries, fruit growth is stopped. This suggests the
seeds contain which of the following hormones?
Chapter 40 – Sensory Systems in Plants
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you already know about the relationship between seeds and fruit? How does it
relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 40 – Sensory Systems in Plants
18. A compound similar to auxin, 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), has been
used
19. Climbing plants, such as vines, rely on touch to navigate and develop tendrils that coil
around objects they encounter. Roots also rely on touch to navigate their way through the soil.
When roots come into contact with an object, they generally grow in a direction away from
the object. Based on this information, which of the following statements is true?
Chapter 40 – Sensory Systems in Plants
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you already know about plant responses to their environments? How does it
relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 40 – Sensory Systems in Plants
20. Coconut milk was an extremely useful additive in plant tissue culture because, in addition
to amino acids, it contains
21. While flipping through an agriculture products catalog, you come across the following
advertisment, “The Centralized Ripening System—makes large scale hormone distribution
even easier!”. What hormone does this product distribute?
Chapter 40 – Sensory Systems in Plants
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you already know about fruit ripening? How does it relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 40 – Sensory Systems in Plants
22. Which naturally-occurring plant hormone has a major role in the phototropic response of
plants?
23. The directional growth response of plants to touch is called
Chapter 40 – Sensory Systems in Plants
24. What endogenous process helps plants to keep their movements and other responses
synchronized with the environment?
25. The acid growth hypothesis links
26. During a viticulturist’s presentation on growing and managing grapes, why did he state
that it is imperative to encourage the grapevine’s natural tendency for positive
thigmotropism?