A. Pore size
B. Soil organisms
C. Type of roots
D. All of these
Related Mcqs:
- Removal of top soil by soil erosion result in the loss of soil:
A. Nitrites
B. Nitrates
C. Nitrogen
D. Nitric and nitrous acids - In water logged soil plants cannot grow properly because the soil is:
A. Physiologically wet
B. Physiologically dry
C. Physically dry
D. None of the above - When a plant first begins to wilts permanently in a pot, its 54.5 gms of soil has 4.5 gms of water. The PWP of this soil is:
A. 4.50%
B. 9%
C. 8.25%
D. 16.50% - The ration of volume of pores in the soil to the total soil volume is referred to as:
A. Pore frequency ratio
B. Pore density ration
C. Pore abundance ratio
D. Pore space ratio - When a soil has been thoroughly wetted and then allowed to drain until capillary movement of the water has stopped, the water content of the soil will give an estimate of it’s:
A. Gravitational water
B. Capillary water
C. Field capacity
D. Storage capacity - By chemical composition the humus has maximum percentage of:
A. Nitrogen
B. Oxygen
C. Carbon
D. Hydrogen - The effects of mulches, irrespective their composition, are attributed to:
A. Suppression of weeds, by restricting the amount of light on the ground surface and the hindering their germination and growth
B. Conservation of soil, by preventing erosion
C. Thermal insulation, leading to greater deposition of dew
D. All of the above - Division of forest into stands on the basis of composition is / are:
A. Pure stand
B. Mixed stand
C. Both (a) & (b)
D. None of these - The control of growing stock, its structure and composition are:
A. Site adaptation
B. Choice of species and provenance
C. Regeneration age and timing of the cut are important consideration
D. Harvesting the produce
E. All of the above - The major effects of mulches, irrespective of their composition, are attributed to:
A. Suppression of weeds, by restricting the amount of light on the ground surface and thus hindering their germination and growth
B. Conservation of soil, by preventing erosion
C. Maintenance or improvement of soil structure, by eliminating or mitigating the severity of rain and wind action
D. All of the above
The correct answer to the question: "The composition of soil air is affected by:" is "All of these".
