Which of the following is an alternative rooting hormone to IBA?

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Multiple Choice

Which of the following is an alternative rooting hormone to IBA?

Explanation:
Rooting hormones are plant growth regulators that stimulate adventitious root formation on cuttings. IBA is a common auxin used for this purpose, and another auxin that works similarly is naphthaleneacetic acid, a synthetic auxin widely used to promote rooting in many species. It’s often chosen for its stability in solution and effectiveness in encouraging root initiation when dipped or dusted onto cuttings. The other substances listed don’t serve as rooting hormones: ethylene is involved in ripening and abscission, gibberellic acid mainly promotes stem elongation and can hinder rooting in some cases, and salicylic acid functions as a defense signal. So, the alternative to IBA is NAA.

Rooting hormones are plant growth regulators that stimulate adventitious root formation on cuttings. IBA is a common auxin used for this purpose, and another auxin that works similarly is naphthaleneacetic acid, a synthetic auxin widely used to promote rooting in many species. It’s often chosen for its stability in solution and effectiveness in encouraging root initiation when dipped or dusted onto cuttings. The other substances listed don’t serve as rooting hormones: ethylene is involved in ripening and abscission, gibberellic acid mainly promotes stem elongation and can hinder rooting in some cases, and salicylic acid functions as a defense signal. So, the alternative to IBA is NAA.

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