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

Related Mcqs:

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

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

2. Relative to shoots, the roots can be very massive in plants of:

   A. Deserts
   B. Lakes and ponds
   C. Mixed temperate forests
   D. Mixed tropical forests

3. 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

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. Effects/influences/functions of soil structure are:

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

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. Influence of soil and moisture conditions means:

   A. If soil is properly worked and weeding is carried out then any local spp can be planted nan area
   B. It has been seen that in spite of high early success there is failure later on
   C. Both (a) & (b)
   D. None of these

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