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    Campbell Biology in Focus
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    Exam 31: Plant Responses to Internal and External Signals
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    Which Plant Hormone Affects the Response to Mechanical Stress,senescence,leaf Abscission,and
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Which Plant Hormone Affects the Response to Mechanical Stress,senescence,leaf Abscission,and

Question 13

Question 13

Multiple Choice

Which plant hormone affects the response to mechanical stress,senescence,leaf abscission,and fruit ripening?


A) abscisic acid
B) ethylene
C) indoleacetic acid
D) gibberellin

Correct Answer:

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