If a Shoot's Tip Breaks Off,____ Levels Rise and Stimulates

Question

If a shoot's tip breaks off,____ levels rise and stimulates cell divisions in the lateral buds.  
A) auxin
B) gibberellin
C) cytokinin
D) abscisic acid
E) ethylene

Accepted Answer

Cytokinins are plant hormones that promote cell division in plant shoots and roots. When a shoot's tip is removed, the concentration of auxin (which inhibits the growth of lateral buds) decreases, allowing cytokinin levels to rise and stimulate cell division and growth in the lateral buds.