Ageing of leaves can be delayed by the application of.

Cytokinins

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Sugars

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Chlorophyll extract

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Abscisic acis

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Solution

The correct option is C Cytokinins
Senescence is the process of ageing of leaves in plant. It can be delayed by a hormone named cytokinins which controls the expression of cytokinin biosynthesis gene.
So, the correct option is A.

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