Question

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

Answer 1

Abscisic acid

Step-by-step explanation:

Abscisic acid (ABA) is a plant hormone, which is produced by plants during stress conditions, such as drought (water-deficit conditions), thus, also known as stress hormone.

In dry conditions, it reduces water loss from plant leaves by reducing the rate of transpiration. ABA causes alteration in the osmotic pressure of stomatal guard cells of leaves. It leads to shrinking and closing of stomata, due to which transpiration is reduced.

Thus, the correct answer is 'abscisic acid.'

Answer 2

The hormone which is being produced under a water-deficit condition which triggers a drought response is known as Abscisic Acid or ABA.

Abscisic acid is termed as a plant hormone. The main functions in the development of plants include
1. Stomatal closure.
2. Control of organ size.
3. Bud dormancy.
It responds to environmental stresses in plants, which include heat stress, freezing tolerance, cold tolerance, soil salinity, and drought.