A. 30%
B. 40%
C. 50%
D. 60%
Related Mcqs:
- The major types of wind erosion are:
A. Siltation
B. Soil creep
C. Suspension
D. All of the above - The factors to control of wind erosion are:
A. The soil should be kept moist as far as possible especially in the season of windstorms. Moist soil is less vulnerable to wind erosion than dry soil
B. Wind breaks by planting tree in rows or shelter belts of any means are effective in wind erosion
C. Both (a) & (b)
D. None of these - To prevent wind and water erosion, the crop is sometimes harvested in such a way that a basal stub of the plant is left behind. This phenomenon is called:
A. Ley farming
B. Mulching
C. Basin listing
D. Strip cropping - The Tarbela catchment erosion has been measured at the rate of _____ meter:
A. 2 to 4 kg/sq
B. 3 to 5 kg/sq
C. 4 to 6 kg/sq
D. None of these - _______ mountains of Pakistan are subject to heavy soil erosion:
A. Northern
B. Western Baluchistan ranges
C. Southern
D. Eastern - An anatomical features, which exclusively develops to counter high velocity of wind:
A. Reaction wood formation
B. Absence of secondary growth
C. Absence of tylosis
D. All of these - Which of the following plants are used as wind breaks?
A. Zizpyhus and Calotropis
B. Dalbergia and Delonix
C. Delonix and Albizia
D. Morinda and Anona - An important agrostological technique to check soil erosion in the initial stages is:
A. Ley farming
B. Land retirement
C. Basin listing
D. Contour farming - Erosion of very fine particles is seen on account of:
A. Saltation
B. Suspension
C. Surface creep
D. Shifting of dunes - Sheet erosion is caused by:
A. Fast running rivers
B. Wind
C. Heavy rains
D. Glaciers
The correct answer to the question: "At present _____ of area in Pakistan is suffering from wind erosion:" is "40%".
