Zeatin is a

Farmers in a particular region were concerned that premature yellowing of leaves of a pulse crop might cause a decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

Which of the following induces cell division in a cell?

Natural cytokinins are synthesized in tissues that are

$A$: Cytokinins are anti-ageing hormones.
$R$: They cause changes in osmotic potential by increasing the volume of mature cells.

$A$ hormone delaying senescence is