A) Phosphon-D
B) Malic hydrazide
C) 2, 4-dichlorophenoxy acetic acid
D) Amo-1618
Correct Answer: C
Solution :
[c] 2, 4-Dichlorophenoxy acetic acid is used for causing defoliation of forest trees. 2, 4-D or 2, 4 dichlorophenoxy acetic acid is an auxin hormone. It stimulates the growth activities of the cells of the root due to which roots get destroyed and thus plants finally destroys. 2, 4-D is used as a defoliant for broad leaved dicots.
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