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Question:

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?

Auxin and Ethylene

Gibberellin and Cytokinin

Gibberellin and Abscisic acid

Cytokinin and Abscisic acid

Solution:

Correct option is A. Auxin and Ethylene. Plant hormone auxin induces flowering in pineapple. Ethylene also helps in synchronization of flowering and fruit set up in pineapple. So, the correct answer is 'Auxin and Ethylene'