A) Growth promotor
B) Auxin
C) Abscisic acid
D) None of the above
Correct Answer: C
Solution :
Abscisic acid is also called stress hormone or dormin. \[\lambda \] Eagle and Wareing (1963) discovered another substance ?Dormin? from dormant buds of Acer (Birch) plants, capable of causing dormancy of seeds.
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