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Class 11 NEET Biology Plant Growth and Development
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Question : 63
Total: 100
Which one among the following chemicals is used for causing defoliation of forest trees?
(1998)
Malic hydrazide
2
,
4
−
D
A
m
o
−
1618
Phosphon D
Validate
Solution:
(b) : 2,4 -D is a famous herbicide or weedicide which especially kills broad leaved weeds. It kills weeds perhaps by over stimulated root growth. Other auxins like 2,4,5 -T have also been used as defoliants during early sixties.
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