(B) Auxins,such as $NAA$ (Naphthalene Acetic Acid),are known to inhibit leaf abscission by preventing the formation of the abscission layer at the bas

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(B) Auxins,such as $NAA$ (Naphthalene Acetic Acid),are known to inhibit leaf abscission by preventing the formation of the abscission layer at the base of the petiole. While ethylene promotes abscission,auxins act as antagonists to this process in young leaves and fruits,thereby delaying the shedding process.