Question

Which one is not a physiological effect of auxin?

• A. Promotes flowering
• B. Promotes bolting
• C. Prevents early fruit and leaf drop
• D. Initiates rooting in stem cuttings

Answer 1

The correct option is B Promotes bolting

Auxin is a plant growth promoter that has the following functions:

• Promotes apical dominance (a phenomenon in which the growth of the main central stem of the plant is more prominent as compared to the others)
• Helps to promote flowering (e.g., in pineapple)
• Can also be used as a weedicide (e.g., 2,4-D)
• Initiates rooting in stem cuttings which is widely used in plant propagation
• Delays abscission of younger plant parts such as leaves , fruits at their early stages
• Helps in differentiation of xylem
• Helps in cell division
• Production of seedless fruits - Parthenocarpy (e,g., tomatoes)

Bolting is a function of gibberellin and not auxin.