Question
Apical dominance
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Answer
- The presence of apical bud inhibits the growth of lateral buds. This phenomenon in which the apical (terminal) bud is active and lateral buds remain inactive is called apical dominance.
- It is believed that apical dominance is controlled by an auxin which is synthesized in the apical bud.
- From the apical bud, the auxin migrates to the lateral buds and inhibits their growth.
- When apical bud is removed, the lateral buds grow and form branches.
- For producing more branches therefore, the apical buds are removed.
- Cytokinins reverse apical dominance effect by promoting growth of lateral buds by cell division.
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