Chapter 40 – Sensory Systems in Plants
Clarify Question
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What is the key concept addressed by the question?
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What type of thinking is required?
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What key words does the question contain and what do they mean?
Gather Content
•
What do you already know about plant growth and thigmotropism? 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
27. Several scientists, including Charles and Francis Darwin, Frits Went and others,
demonstrated that auxins caused stems to bend toward light in a series of elaborate
experiments. Went was the researcher who finally determined that bending of the stem toward
light was a result of which mechanism?
28. A scientist is investigating a hormone response in rose bush stems by removing the apical
meristems of the main stems. What is the most likely result of this experiment and what
hormone is responsible?
Chapter 40 – Sensory Systems in Plants
29. A viticulturist wants to grow larger grapes. Which specific hormone would a viticulturist
apply to the plants?
30. A plant physiologist treats a leaf with abscisic acid and observes that the stomata close.
What happened inside the guard cells during the experiment?
31. Directional, light-triggered plant development is known as
Chapter 40 – Sensory Systems in Plants
32. What happens when coleoptiles are illuminated with directional light from the side
instead of from directly overhead?
33. Before ARF transcription factors can trigger auxin-induced gene expression, what must
happen?
Chapter 40 – Sensory Systems in Plants
34. When gibberellin binds to its receptor, what happens to activate the gibberellin-dependent
transcription factor GA-TRXN?
35. In some genetically engineered tomatoes, fruit ripening was delayed by crippling the gene
that produces which hormone?
Chapter 40 – Sensory Systems in Plants
36. When one plant is shaded by another, why is the ratio of far-red to red light increased
compared to an unshaded plant?
37. In Arabidopsis plants, about 10% of its genome is devoted to processes tied to which
molecule?
Chapter 40 – Sensory Systems in Plants
38. How do nastic movements differ from tropisms?
Fill in the Blank Questions
Choose the letter of the best match from the following:
A. abscisic acid
B. auxin
C. ethylene
D. cytokinin
E. gibberellin
39. A chemical derivative of adenine.
Chapter 40 – Sensory Systems in Plants
40. Its defoliant effects were first noticed when it leaked from gas lights; later found to be
produced by plants themselves.
41. Influential in the opening and closing of stomata.
Check All That Apply Questions
Chapter 40 – Sensory Systems in Plants
42. Chemical inhibitors of hormone synthesis or signaling are powerful tools that yield
invaluable information about hormone function. Triadimefon, propiconazole, and
spironolactone are just a few of the compounds identified to inhibit the function of
brassinosteroids (BR). Which of the following are probable physiological effects due to the
inhibition of BR? Check all that apply.
Clarify Question
•
What is the key concept addressed by the question?
o This question is asking about the function of brassinosteroids.
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What type of thinking is required?
o You are being asked to take what you already know and apply it to the loss of a plant hormone.
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What key words does the question contain and what do they mean?
Gather Content
•
What do you already know about brassinosteroids? 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
Multiple Choice Questions
43. Abscisic acid synthesized in the root travels to different parts of the shoot where it
regulates transpirational water loss. What is the most likely way that ABA travels from the
root to the various locations within the shoot?
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 transportation of materials within a plant? 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?