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Solution


Q.

Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production        [2023]
1 Zeatin  
2 Abscisic Acid  
3 Indole-3-butyric Acid  
4 Gibberellic Acid  

Ans.

(4)

Gibberellins are one of the promotory plant growth regulators. Spraying juvenile conifers with gibberellic acids hastens the maturity period, thus leading to early seed production.