2, 4 DB can't be metabolized into 2, 4 D in
A. Cereals
B. Legumes
C. Oilseeds
D. Starch crops
Answer: Option B
Solution(By Examveda Team)
2, 4 DB or 4-(2, 4-dichlorophenoxy) butyric acid is a selective systemic phenoxy herbicide used to control many annual and perennial broad leaf weeds.2, 4 D is 2, 4-Dichlorophenoxyacetic acid is a systemic herbicide that kills most broadleaf weeds by causing uncontrolled growth in the weeds.
2, 4 DB cannot be metabolized into 2, 4 D in legumes. Whereas 2, 4 DB is metabolized to 2, 4 D in sensitive species as it is a herbicide. Some legumes that are sensitive to 2, 4 D are tolerant to 2, 4 DB because they lack the β oxidation activity required to activate it.
Related Questions on Agronomy
Downy Mildew of Bajra caused by
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B. S. graminicola (Sclerospora)
C. T. penicillica
D. All of the above
The criteria of essentiality of nutrients in plants was given by
A. D. J. Nicholas
B. Arnon and Stout
C. J. S. Kanwar
D. M. S. Swaminathan
A. Manganese
B. Boron
C. Zinc
D. Iron
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