NEET BIOLOGY

Detailed explanation-1: -Abscisic acid is a plant hormone that inhibits growth in plants. It is synthesized in leaves. It promotes senescence i.e. wilting or fall of leaves. Abscisic acid also inhibits seed germination and development.

Detailed explanation-2: -Abscisic acid is a growth-inhibiting hormone as it inhibits or suppresses the growth of plants. This hormone is also called the stress hormone as it induces seed dormancy to overcome stress conditions.

Detailed explanation-3: -Abscisic acid (ABA) is a general plant-growth inhibitor. It induces dormancy and prevents seeds from germinating; causes abscission of leaves, fruits, and flowers; and causes stomata to close.

Detailed explanation-4: -Interactions with Other Hormones At a cellular level, abscisic acid inhibits both cell division and cell expansion. It often opposes the growth-inducing effects of auxin and gibberellic acid.

Detailed explanation-5: -Abscisic acid (ABA) is an important phytohormone regulating plant growth, development, and stress responses.