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  4. Auxins are known to promote in pineapples.

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Q. Auxins are known to promote ____________ in pineapples.

NTA AbhyasNTA Abhyas 2020Plant Growth and Development

Solution:

Auxins help to initiate rooting in stem cuttings, an application widely used for plant propagation. Auxins promote flowering e.g. in pineapples. They help to prevent fruit and leaf drop at early stages but promote the abscission of older mature leaves and fruits.