Question

brief note on abscisic acid..

don't copy from Google please​

Answer 1

Answer:

Abscisic acid (ABA) is a plant hormone.

Answer 2

☞ AnSwer :-

➠ ABSCISIC ACID :-

• Abscisic acid (ABA) was discovered for its role in regulating abscission and dormancy.
• It acts as a general plant growth inhibitor and an inhibitor of plant metabolism.
• ABA inhibits seed germination.
• ABA stimulates the closure of stomata in the epidermis and increases the tolerance of plants to various kinds of stresses. Therefore, it is also called the stress hormone.
• ABA plays an important role in seed development, maturation and dormancy.
• By inducing dormancy, ABA helps seeds to withstand desiccation and other factors unfavourable for growth.
• In most situations, ABA acts as an antagonist to GAs.

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➠ MoRe to know.....

• Abscisic acid is referred to as stress hormone as it causes different plant responses acting against stress conditions.
• It facilitates the seed dormancy and ensures seed germinates under favourable circumstances. It also causes the closing of stomata when there is a drought.