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- #National Eligilibility Cum Entrance Test
- #Biology
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Leaf abscission is caused by
Option: 1
ABA
Option: 2
Cytokinin
Option: 3
Auxin
Option: 4
Gibberellin
Answers (1)
Abscisic acid promotes abscission of flowers and fruits. Its excessive presence stops protein and RNA synthesis in the leaves and hence stimulates their senescence (leaf fall is actually promoted by ethylene).
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