The functions of soil structure are:

Related Mcqs:

1. Effects/influences/functions of soil structure are:

   A. Water holding capacity
   B. Aeration
   C. Porosity
   D. Heat transfer
   E. All of the above

2. Removal of top soil by soil erosion result in the loss of soil:

   A. Nitrites
   B. Nitrates
   C. Nitrogen
   D. Nitric and nitrous acids

3. The development of soil structure from single grained or massive states conditions:

   A. Single grained: Where each soil particles function as an individual e.g. Sandy soil
   B. Massive: Clay fills the spaces and pores so that the soil becomes dense and forms clods
   C. Both (a) & (b)
   D. None of these

4. The major types of soil structure are:

   A. Basis: The classification of soil structure is based on size shape and stability of soil aggregates. The soil aggregate may be of following forms
   B. Major shape: Spheroidal, plate like, bloke like, prism like
   C. Both (a) & (b)
   D. None of these

5. The factors governing the structure of soil are called:

   A. Topographic
   B. Temperature
   C. Biotic
   D. Edaphic climax

6. Pollution of soil may destroy its structure and:

   A. Fertility
   B. Porosity
   C. Thickness
   D. Nitrates

7. 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

8. 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%

9. 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

10. 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