High concentration of synthetic auxins would

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(B) The correct answer is $B$. In many plants,the apical bud grows and the lower axillary buds are suppressed,a phenomenon known as apical dominance.S

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Prevent lateral buds to grow

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(B) The correct answer is $B$. In many plants,the apical bud grows and the lower axillary buds are suppressed,a phenomenon known as apical dominance.Synthetic auxins,when applied in high concentrations,mimic this effect or enhance it,thereby preventing the growth of lateral buds.Removal of the apical bud results in the growth of lower buds because the source of auxin $(IAA)$ is removed,which otherwise inhibits the growth of lateral buds.

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$(c)$ Synthetic auxins

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