Which naturally-occurring plant hormone has a major role in the phototropic response of plants?
A) auxin
B) gibberellin
C) abscisic acid
D) ethylene
E) 2,4-D
Correct Answer:
Verified
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Q37: How do nastic movements differ from tropisms?
A)Nastic
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Q39: Directional,light-triggered plant development is known as
A)thigmotropism.
B)phototropism.
C)thigmonasty.
D)photomorphogenesis.
E)acid-growth movement.
Q40: When one plant is shaded by another,why
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