NEET 2019 Biology 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?

(1)Auxin and EthyleneCorrect
(2)Gibberellin and Cytokinin
(3)Gibberellin and Abscisic acid
(4)Cytokinin and Abscisic acid

Answer: (1)

Solution

In pineapple, auxins (e.g. NAA) and ethylene (applied as ethephon, which releases ethylene) promote flowering, synchronise flowering and fruit set, and allow flowering to be induced throughout the year (NCERT: ethylene initiates flowering in pineapple; auxins also promote

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Question ID VK-092541