One hormone promotes abscission of flowers while the other delay senescence of fruits. These are respectively:

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Question:
One hormone promotes abscission of flowers while the other delay senescence of fruits. These are respectively:

1.Auxin and Cytokinin.

2.Ethylene and Abscisic acid

3.Abscisic acid and Ethylene

4.Ethylene and Gibberellic acid

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