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Solution


Q.

Spraying sugarcane crop with which of the following plant growth regulators increases the length of stem, thus, increasing the yield           [2024]
1 Auxin  
2 Gibberellin  
3 Cytokinin  
4 Abscisic acid  

Ans.

(2)

Spraying sugarcane crop with gibberellins increases the length of the stem and therefore increases the yield by as much as 20 tonnes per acre.