Question

Hormone helps in stem elongation.
Auxin
Gibberellin
Cytokinin
Abscisic Acid​

Answer 1

$(auxin \: is \: your \: answer)$

Answer 2

Auxins promote cell development, which aids in stem elongation.

• Indole-3-acetic acid (IAA) is the most abundant auxin in nature and one of the most important growth agents in plants.
• They were the very first plant growth hormones to be identified.
• Auxins have two functions in plants, depending on where they are produced.
• Apical buds generate compounds that stimulate root growth and development while inhibiting lateral bud growth, ensuring apical dominance.
• They also promote the formation of ethylene, cell division, and differentiation.
• Auxins have been used to root tissue culture and stem cuttings.
• As a result, they've found significant commercial application in nurseries and agriculture.
• In greenhouses, synthetic auxins have been used to enhance fruit growth and reduce preharvest fruit falling.