Find the odd man out:

Auxin

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Abscisic acid

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Thyroxine

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Gibberellin

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Solution

The correct option is C Thyroxine
Auxin is a plant hormone that is produced in the tip of the stem that works in elongation.
Auxin helps the plant to move to the darker side, the cell grows larger than corresponding cells present on the lighter side of the plant.
So, the correct option is 'Auxin'.

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