Temperature extremes, lack of water, and other environmental stresses trigger an increase in which hormone?
A)gibberellin
B)auxin
C)abscisic acid
D)ethylene
E)cytokinin

Question

Quizplus · Accepted Answer

Abscisic acid is responsible for closing stomata (tiny pores on the leaves) during water stress and drought conditions. It also triggers other responses to environmental stresses such as heat shock, cold shock, and salt stress.

Temperature Extremes, Lack of Water, and Other Environmental Stresses Trigger