Question

Name the plant hormone which is called the stress hormone.

Answer 1

Abscisic acid is called the stress hormone as it induces various responses in plants against stress conditions. It increases the tolerance of plants toward various stresses. It induces the closure of the stomata during water stress. It promotes seed dormancy and ensures seed germination during favorable conditions. It helps seeds withstand desiccation. It also helps in inducing dormancy in plants at the end of the growing season and promotes the abscission of leaves, fruits, and flowers.