In Pakistan the area effected due to water erosion is about_________________?
A. 12 million to
B. 13.05 million lia
C. 22 million ha
D. 15 million lva
In Pakistan, the total length of canal system exceeds________________?
In Pakistan, the total length of canal system exceeds________________?
A. 59000 Km
B. 52000 Km
C. 58000 Km
D. 60000 Km
Number of crops grown on the same piece of land in a year and expressed in percentage is known as_______________?
Number of crops grown on the same piece of land in a year and expressed in percentage is known as_______________?
A. Cropg pattern
B. Cropg index
C. Crop rotation
D. Cropg intensity
The transport of a substance across a biological membrane against a concentration gradient is called___________________?
The transport of a substance across a biological membrane against a concentration gradient is called___________________?
A. Passive transport
B. Active transport
C. Absorption
D. Dissolution
A method of control of pests in which natural predators and parasites are used without causing serious adverse environmental side effects is called_________________?
A method of control of pests in which natural predators and parasites are used without causing serious adverse environmental side effects is called_________________?
A. IPM
B. Allelopathy
C. Insect control
D. Chemical control
Use of tetrazolium staining for assessment of seed quality was suggested by________________?
Use of tetrazolium staining for assessment of seed quality was suggested by________________?
A. Woodstock (1973)
B. Moore (1973)
C. Maguire (1962)
D. Germ (1950)
Progeny of nucleus seed is called_________________?
Progeny of nucleus seed is called_________________?
A. Basic seed
B. Breeder seed
C. Foundation seed
D. All the above
Water courses are lined to avoid_________________?
Water courses are lined to avoid_________________?
A. Transpiration
B. Evaporation
C. Seepage
D. Erosion
The herb plants have___________________?
The herb plants have___________________?
A. Woody stem
B. Non-woody stem
C. Trunk
D. All the above
The best soil for cotton cultivation is_________________?
The best soil for cotton cultivation is_________________?
A. Sandy soil
B. Loamy soil
C. Silty soil
D. Clay loam soil