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    -Which Is(are) the Principal Substance(s) That Regulate(s) Thigmotropism
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-Which Is(are) the Principal Substance(s) That Regulate(s) Thigmotropism

Question 47

Question 47

Multiple Choice

  -Which is(are)  the principal substance(s)  that regulate(s)  thigmotropism? A)  auxin and ethylene B)  gibberellin and ethylene C)  abscisic acid and auxin D)  cytokinin and abscisic acid E)  none of these
-Which is(are) the principal substance(s) that regulate(s) thigmotropism?


A) auxin and ethylene
B) gibberellin and ethylene
C) abscisic acid and auxin
D) cytokinin and abscisic acid
E) none of these

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