Apical dominance is caused by :
Correct answer: D. Auxin in shoot tip
- A. Abscisic acid in lateral bud
- B. Cytokinin in leaf tip
- C. Gibberellin in lateral buds
- D. Auxin in shoot tip
Explanation
d) : According to Thimann and coworkers, auxin is responsible for the dominance of apical bud. The apical dominance is due to interaction between auxin and cytokinin. If the auxin concentration is higher than cytokinin, the apical bud will dominate the growth.
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