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Q2) Apical dominance is caused by ... ... [ CEBSE 1992]
a) Abscisic acid in lateral bud
b) Cytokinin in leaf tip
c) Gibberellin in lateral buds
d) Auxin in shoot tip
Apical dominance is thought to be caused by the apical bud producing IAA (auxin) in abundance.
This auxin is transported basipetally from the apical bud. The auxin causes the lateral buds to remain dormant.
Answer : (d)