Ozone layer in the atmosphere absorbs
A. Ultraviolet radiation
B. Infra red radiations
C. Total solar radiations
D. All of these
Answer: Option A
A. Ultraviolet radiation
B. Infra red radiations
C. Total solar radiations
D. All of these
Answer: Option A
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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