Describe: $(1)$ Stress Hormone

(N/A) The hormone known as the $Stress \ Hormone$ in plants is $Abscisic \ Acid$ $(ABA)$.
$ABA$ is synthesized in various parts of the plant,including leaves,stems,and fruits,especially under stress conditions.
Its primary functions include:
$1$. It acts as a general plant growth inhibitor and an inhibitor of plant metabolism.
$2$. It stimulates the closure of stomata in the epidermis,which helps the plant conserve water during drought or water stress conditions.
$3$. It promotes seed dormancy and ensures seed development,maturation,and dormancy,which helps seeds withstand desiccation and other unfavorable growth factors.
$4$. It plays a crucial role in seed development and tolerance to various stresses,hence it is called the $Stress \ Hormone$.