37. Plant Sensation and Response
Tropisms and Hormones
Multiple Choice
Multiple ChoiceIn shoots, branching is inhibited by __________ from the tip of a growing shoot, but this effect is countered by __________ from the roots.
A
cytokinins; auxin
B
gibberellins; ethylene
C
gibberellins; abscisic acid
D
auxin; abscisic acid
E
auxin; cytokinins
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