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Which plant hormone helps in increasing stem length?

Answer and explanation

Correct answer: Gibberellin

Gibberellin is a plant growth hormone that promotes stem elongation and can increase the length of internodes, the regions between successive leaves. Therefore, a plant treated with suitable gibberellin may develop a taller stem. Insulin, adrenaline, and thyroxine are hormones associated with animals rather than plant stem elongation. Auxin also affects plant growth, but it is not included among the choices, making gibberellin the unambiguous answer.

Related tags

Control CoordinationGibberellinStem GrowthPlant HormonesControl And CoordinationScienceClass 10 Mcq

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