Cytokinins are known to:

Help in retention of chlorophyll

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Promote formation of abscission layer

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Inhibit cytoplasmic movement

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Influence water transport

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Solution

The correct option is A Help in retention of chlorophyll
Cytokinins are known to help in retention of chlorophyll and delay senescence. In senescent leaves, disintegration of chlorophyll takes place. Leaves turn yellow, proteins are degraded and ultimately leaves are shed from the plant.

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