Element responsible pollen grain of plant__________?
Element responsible pollen grain of plant__________?
A. N
B. P
C. K
D. B
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The exact formula for calculating the base saturation percentage is_____________________?
The exact formula for calculating the base saturation percentage is_____________________?A. Bas saturation percentage = CA+Mg+Na / CEC x 100
B. Bas saturation percentage = /CEC / CA+Mg+Na x 100
C. Bas saturation percentage = /CEC / CA+Mg x 100
D. None of the aboveThe soil texture refers to the relative proportion of sand,__________ and clay:
The soil texture refers to the relative proportion of sand,__________ and clay:A. Stone
B. Soil
C. Rock
D. SiltThe soil quality is always deteriorated by:_________?
The soil quality is always deteriorated by:_________?A. Erosion & pollution
B. Waterlogging & salinization
C. Nutrient mining
D. All of theseThe dominance of acidity creates toxicity?
The dominance of acidity creates toxicity?A. Mo
B. Al
C. Zn
D. MgThe relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth’s crust is_________?
The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth’s crust is_________?A. 12.5 % -12.5 % – 75%
B. 64.7 % – 27.4 % – 7.9 %
C. none of A & B
D. 7.9% – 27.7 % – 64.4The site of grains present in sands structuring range__________________?
The site of grains present in sands structuring range__________________?A. 1.00 0.0625 mm dia
B. 0.0625 mm dia
C. 0-1.0 mm dia
D. None of the above