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Plant Growth and Development
Question
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Apical dominance is caused by

  • auxin

  • gibberellin

  • kinetin

  • ABA

Answer

A.

auxin

In most of the plants, as the apical bud grows, the growth of lower axillary buds is suppressed. Removal of apical bud results in the growth of lower buds. The auxin (IAA) of the terminal bud inhibits the growth of lateral buds. This phenomenon is known as apical dominance.

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