During drought stress a plant hormone called _____________________ causes the stomata of a plant's leaf to close.

Question

Quizplus · Accepted Answer

During drought stress, plants produce abscisic acid, which signals the stomata to close. This is an adaptive response to conserve water and limit water loss through transpiration. Ethylene and malic acid do play roles in plant stress responses but are not specifically involved in stomatal closure during drought stress. Estrogen and cuprous oxide are not plant hormones and do not play a role in plant stress responses.

During Drought Stress a Plant Hormone Called _____________________ Causes the Stomata