Apical dominance is not affected by ...................

Indole acetic acid

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Gibberellic acid

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Indole acetaldehyde

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Indole butyric acid

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Solution

The correct option is B Gibberellic acid
GA promotes the elongation of plants by inducing the division of lateral meristem. Whereas, the phytohormone auxin causes the apical dominance in plants. In the given options all other options other than gibberellic acid accounts for different types of auxin.

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Which amino acid is responsible for indole acetic acid formation?

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