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प्रश्न
Why is abscisic acid also known as a stress hormone?
उत्तर
- Abscisic acid is called a stress hormone as it induces various responses in plants against stress conditions.
- It increases the tolerance of plants to various stresses. It induces the closure of the stomata during water stress. It promotes seed dormancy and ensures seed germination under favourable 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.
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