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    Biology Study Set 16
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    Exam 38: Plant Developmental Responses to External and Internal Signals
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    The "Stress Hormone" Involved in Stomatal Closure During Water Stress
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The "Stress Hormone" Involved in Stomatal Closure During Water Stress

Question 69

Question 69

Multiple Choice

The "stress hormone" involved in stomatal closure during water stress is


A) abscisic acid.
B) auxin.
C) cytokinin.
D) ethylene.
E) gibberellin.

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