You are part of a desert plant research team trying to discover crops that will be productive in arid climates. You discover a plant that produces a hormone under water-deficit conditions that triggers a suite of drought responses. Most likely the hormone is
A) ABA.
B) GA.
C) IAA.
D) 2, 4-D.
E) salicylic acid.

Question

Quizplus · Accepted Answer

ABA (abscisic acid) is known for triggering a suite of responses to drought conditions in plants. This hormone signals the closure of stomata to prevent water loss, as well as the activation of genes that promote the synthesis of osmoprotectants and antioxidants, which help the plant survive under conditions of water scarcity. Therefore, it is likely that the plant in question produces ABA under water-deficit conditions to enhance its drought tolerance.

You Are Part of a Desert Plant Research Team Trying