Hormones have synergistic and antagonistic effect with respect to one another. Hence it becomes difficult to assign any affect seen to any single hormone because it can be a synergistic or an antagonistic effect as well.

Synergistic effect occurs when two hormones come together to have the same effect and when their effect is combined, it amplifies the needed objective.

Antagonistic effect on the other hand is when two hormones counter the effect of each other.

For eg: Auxin acts synergistically with cytokinin to control the shoot stem‐cell meristem while both the hormones act antagonistically to maintain the root meristem.