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प्रश्न
Give the chemical features of abscisic acid.
उत्तर
The chemical features of Abscisic acid are:
- It promotes abscission of leaves and induces dormancy in many plants.
- It controls the dormancy in buds and seeds by inhibiting growth processes.
- It accelerates the senescence of leaves, flowers and fruits.
- It inhibits and delays cell division and cell elongation and suppresses cambium activity by inhibiting mitosis in vascular cambium.
- ABA could cause the efflux of K+ ions from the guard cells and result in the closure of stomata. So, it is known as an antitranspirant.
- It acts as a stress hormone by inducing the plant to bear adverse environmental conditions.
- It inhibits flowering in long-day plants but stimulates flowering in short-day plants.
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संबंधित प्रश्न
Which plant hormone is responsible for the wilting and falling of leaves?
Most of the plant hormones promote plant growth. A plant hormone which inhibits growth is ______.
______ causes stomatal closure.
Which hormone is known as a stress hormone in plants? Why?
Adverse environmental condition results in production of ______ in plants.
Abscisic acid functions as
Which phytohormone can be categorised as stress hormone?
The main function of abscisic acid in plants is ____________.
The substance that triggers the fall of mature leaves and fruits from plants is due to
______ hormone is responsible for the efflux of K+ ions from guard cells and acts as an antitranspirant.
