Question

Which of the following hormone promotes bolting?

• A. GA
• B. Ethylene
• C. Auxin
• D. Kinetin

Answer 1

Answer:

A. GA

• Bolting is the elongation of internode just prior to flowering.

• It is seen in plants with rosette habit. GA promotes the action of bolting.

• Ethylene helps rapid internode elongation in deep-water seedlings of rice.

• Auxin promotes rooting in stems.

• Kinetin promotes shooting in stems.