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.
Frequently asked questions
What is the correct answer to this question?
Gibberellin
Why is this the correct answer?
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.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Plant hormones.
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