Which is the hormone responsible for apical dominant growth?

Abscissic acid

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Gibberellins

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Kinetin

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Auxins

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Solution

The correct option is A Auxins
The apical bud produces an auxin (IAA) that inhibits growth of the lateral buds further down on the stem towards the axillary bud. It was first discovered that the plant hormone auxin likely regulates apical dominance in 1934. Abscisic acid, gibberellins and kinetin does not involves in apical dominance.
Therefore, the correct answer is option D.

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