A. Diffusion
B. Mass flow
C. Root exudation
Related Mcqs:
- Soil water in excess of hygroscopic and capillary water which moves downward through the soil by the force of gravity is called______________?
A. Capillary water
B. sub-surface water
C. Gravitational water
D. Run off water - Green revolution came into being due to evolution of_________________?
A. Wheat varieties
B. Sugarcane varieties
C. Cotton varieties
D. All the above - In pulses, for the production of nucleus seed we require minimum of_________________?
A. 300 plant progenies
B. 400 plant progenies
C. 500 plant progenies
D. 200 plant progenies - Breeders seed production is taken up from the nucleus seed B and A lines are pollinated in an isolation of 1 Km in a ratio of_________________?
A. 1:2
B. 1:3
C. 1:4
D. 1:5 - The root of cotton plant goes up to depth of_________________?
A. 2-3 ft
B. 4-6 ft
C. 8-10 ft
D. non of these - The significance of difference among several means is tested with the level of_________________?
A. F-test
B. t-test
C. Z-test
D. X-test - Fumigating and warming soil by covering it with black plastic is called__________________?
A. Mulching
B. Fumigation
C. Soil solarization
D. None of the above - The crops which are grown to reduce the soil erosion and natural losses by leaching is known as______________?
A. Companion crops
B. Cover crops
C. Mixed crops
D. Ratooning crops - Sowing seed without any tillage in the soil is called__________________?
A. Minimum tillage
B. Zero tillage
C. Secondary tillage
D. None of the above - The soil are contains__________________?
A. Less oxygen as compared 10 atmosphere
B. More carbon dioxide as compared to atmosphere
C. Both a & b
D. None of the above
