Question:
Which one of the following plant growth regulators facilitate adventitious root formation?
Which one of the following plant growth regulators facilitate adventitious root formation?
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- Auxins → root initiation.
- Cytokinins → shoot initiation.
- Balance of auxin:cytokinin determines organogenesis.
- Cytokinins → shoot initiation.
- Balance of auxin:cytokinin determines organogenesis.
Updated On: Aug 26, 2025
- Auxin
- Zeatin
- Dihydrozeatin
- Kinetin
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The Correct Option is A
Solution and Explanation
Step 1: Adventitious root formation is stimulated by auxins, a class of plant hormones.
Step 2: Auxins promote cell elongation and differentiation, especially in root initiation.
Step 3: Cytokinins (e.g., Zeatin, Kinetin, Dihydrozeatin) mainly promote cell division and shoot initiation, not root formation.
Final Answer: Auxin facilitates adventitious root formation.
\[\boxed{\text{Correct Answer: (A)}}\]
Step 2: Auxins promote cell elongation and differentiation, especially in root initiation.
Step 3: Cytokinins (e.g., Zeatin, Kinetin, Dihydrozeatin) mainly promote cell division and shoot initiation, not root formation.
Final Answer: Auxin facilitates adventitious root formation.
\[\boxed{\text{Correct Answer: (A)}}\]
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