Which phytohormone promotes falling of old le | vedclass

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(D) Auxin is a plant hormone that plays a dual role in leaf abscission. It inhibits the abscission of young leaves by maintaining the physiological ac

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Auxin

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(D) Auxin is a plant hormone that plays a dual role in leaf abscission. It inhibits the abscission of young leaves by maintaining the physiological activity of the cells in the abscission zone. Conversely,it promotes the abscission of old leaves by stimulating the formation of the abscission layer.

Which phytohormone promotes falling of old leaves whereas inhibits falling of young leaves?

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