Effects/influences/functions of soil structure are:

Related Mcqs:

1. The functions of soil structure are:

   A. Key to fertility of soil
   B. Important factor in soil erosion
   C. Both (a) & (b)
   D. None of these

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 major effects of soil organic matter are:

   A. Soil depth
   B. Climatic situation
   C. Both (a) & (b)
   D. None of these

4. 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

5. 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

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

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

7. Pollution of soil may destroy its structure and:

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

8. The influences of crown on trees is:

   A. Quality of bole or wood
   B. Volume production per unit area
   C. Control composition of species
   D. Regulate seeds and resin production
   E. All of the above

9. 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%

10. 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