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Solution


Q.

It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield                  [2019]
1 Cytokinin and Abscisic acid  
2 Auxin and Ethylene  
3 Gibberellin and Cytokinin  
4 Gibberellin and Abscisic acid  

Ans.

(2)

Synthetic auxins like NAA and 2, 4-D are often employed for inducing flowering in pineapple. Ethylene also stimulates flowering in pineapple and related plants. Hence, both auxin and ethylene can be applied artificially to induce flowering in pineapple plants throughout the year to increase yield.