A) IAA
B) GA3
C) ABA
D) 2,4-D
Correct Answer: D
Solution :
ABA (Abscisic acid) inhibits synthesis of RNA and proteins. It has been shown that ABA regulate the expression of certain genes during seed maturation and under and certain stress condition such as heat shock, adaptation to low temperature and tolerance. - IAA (Indole 3-acetic acid) is natural auxin whereas 2, 4-D (2, 4-dichlorophenoxy acetic acid) is synthetic auxin. - GA3 (Gibberelic acid) secreted from a parasitic fungus Fusarium monili forme (Gibberella fujikuroi).
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