A species- specific ratio of produced in the apical meristem and _ produced in the root tips maintains a balance between shoot and root growth.
A) abscisic acid; ethylene
B) auxins; cytokinins
C) gibberellins; abscisic acid
D) cytokinins; auxins
E) abscisic acid; gibberellins
Correct Answer:
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Q19: A botanist who wants to stimulate flower
Q20: Roots grow downward and shoots grow upward
Q21: Suppose you have some seeds that refuse
Q22: Most scientists believe that the lateral buds
Q23: Abscisic acid enforces dormancy of seeds by
A)
Q25: What causes the "leaf drop" that occurs
Q26: The relative sizes of roots and shoots
Q27: Elongation of cells in stems is promoted
Q28: Auxin
A) promotes phototropism.
B) stimulates flowering.
C) promotes cell
Q29: What will happen to a long- day
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