A) ethylene
B) abscisic acid
C) IAA
D) starch
Correct Answer: B
Solution :
Abscisic Acid (ABA) was isolated by Liu and Crans (1961) from mature cotton fruits. The other name dormin is also given to ABA because it induces seed dormancy as well as bud dormancy. Main physiological effects of ABA are it promotes abscission of leaves, flowers and fruits (b) It accelerates senescence. (c) It promotes bud dormancy. (d) It is a natural growth inhibitors.
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