A) \[G{{A}_{3}}\]
B) Zeatin
C) NAA
D) Ethylene
Correct Answer: C
Solution :
Many synthetic hormones like NAA, IBA, 2,4,D have been found to very effective in preventing the premature fall of fruits. 2-4-D synthetic auxin is generally used to prevent premature fall of fruit in apple and orange while NAA is used to prevent preharvest fruit drop of fruit in tomatoes.
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