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Solution


Q.

Which hormone promotes internode/petiole elongation in deep water rice               [2023]
1 Ethylene  
2 2, 4-D  
3 GA3  
4 Kinetin  

Ans.

(1)

Ethylene promotes rapid internode/petiole elongation in deep water rice plants. It helps leaves/upper parts of the shoot to remain above water.