Primary air polluted is________________?
Primary air polluted is________________?
A. SO2
B. SO3
C. SO4
D. None
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Oka (1975) has suggested that me population size suitable for maintenance and seed production of a commercial crop of a self pollinated species should be________________?
Oka (1975) has suggested that me population size suitable for maintenance and seed production of a commercial crop of a self pollinated species should be________________?A. 100 plants
B. 200 plants
C. 300 plants
D. 400 plantsSowing seed without any tillage in the soil is called__________________?
Sowing seed without any tillage in the soil is called__________________?A. Minimum tillage
B. Zero tillage
C. Secondary tillage
D. None of the aboveGaseous loss of a substance from the soil or from fertilizer or manure is called_________________?
Gaseous loss of a substance from the soil or from fertilizer or manure is called_________________?A. Volatilization
B. Evaporation
C. Transpiration
D. EvapotranspirationWho gave the formula for coefficient of velocity of germination ?
Who gave the formula for coefficient of velocity of germination ?A. Kotowski (1926)
B. Germ (1949)
C. Deloucle & Baskin (1972)
D. Moore (1973)Botanical name of American cotton is_________________?
Botanical name of American cotton is_________________?A. G. hirsutum
B. G. arborium
C. G. barb dense
D. Non of theseInitial vegetation that invades and occupies the area is called_________________?
Initial vegetation that invades and occupies the area is called_________________?A. Pioneer
B. Range
C. Resin
D. None of the above