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Grade 12th passBotany

which of the following reduces plant growth and induces dormancy?
  1. cytokinin
  2. auxin
  3. xylene
  4. abscisic acid

Profile image of raghav
12 Years agoGrade 12th pass
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1 Answer

Profile image of Apoorva Arora
12 Years ago
Functions of Abscisic Acid
  • Stimulates the closure of stomata (water stress brings about an increase in ABA synthesis).
  • Inhibits shoot growth but will not have as much affect on roots or may even promote growth of roots.
  • Induces seeds to synthesize storage proteins.
  • Inhibits the affect of gibberellins on stimulating de novo synthesis of a-amylase.
  • Has some effect on induction and maintanance of dormancy.
  • Induces gene transcription especially for proteinase inhibitors in response to wounding which may explain an apparent role in pathogen defense.