The first hormone produced by a plant as part of an induced response to drought stress is
A) ethylene.
B) abscisic acid.
C) canavanine.
D) jasmonate.
E) heat shock protein.

Question

Quizplus · Accepted Answer

The first hormone produced by a plant in response to drought stress is abscisic acid. This hormone helps the plant conserve water by reducing transpiration and promoting stomatal closure. Ethylene is produced later in the stress response and can contribute to leaf senescence and leaf abscission. Canavanine, jasmonate, and heat shock proteins are not hormones involved in the drought stress response.

The First Hormone Produced by a Plant as Part of an Induced