Cytokinin helps in delaying leaf senescence mainly by

What should be added with auxin to hasten cell division in callus?

From your knowledge of physiology,can you think of some methods to increase the life span of cut plants in a vase?

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?

Delay of senescence or Richmond-Lang effect is a physiological effect of:

$A$ plant hormone used for inducing morphogenesis in plant tissue culture is