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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?

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a

Gibberellin and Cytokinin

b

 Auxin and Ethylene

c

Gibberellin and Abscisic acid

d

 Cytokinin and Abscisic acid

answer is B.

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Detailed Solution

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Both auxins and ethylene together influence flowering in pineapple and make it fl ower throughout the year.

(1) Cytokinins and abscisic acid are antagonistic.

(3) Gibberellins and cytokinins together can break seed dormancy and they have no role in pineapple flowering.

(4) Gibberellins and abscisic acid are antagonistic and have many effects on plants.

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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?