Which one of the following nutrients is constituent of cell wall in the plants
A. Phosphorus
B. Calcium
C. Zinc
D. Potassium
Answer: Option B
A. Phosphorus
B. Calcium
C. Zinc
D. Potassium
Answer: Option B
Downy Mildew of Bajra caused by
A. C. fusiformis
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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