The soil formation occurs in the following consecutive stages:

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. Soil formation is initiated by the phenomenon of:

   A. Weathering
   B. Gleization
   C. Laterization
   D. Pedogenesis

3. A passive factor which affects formation of soil:

   A. Nature of parent material
   B. Annual rainfall
   C. Wind velocity
   D. Mean temperature

4. 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

5. 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

6. 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%

7. 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

8. 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

9. Many forested regions of today were once barren rock areas. Mot likely this change involved the following sequence of stages:

   A. Lichens-mosses-annual herbs-wood shrubs
   B. Annual herb-weedy shrubs-lichens-mosses
   C. Woody shrubs-mosses-lichens-annual herbs
   D. Mosses-annual herbs-woody shrubs-lichens

10. A branch of ecology which is concerned with the study of individual species at all stages of its life cycle in relation to environment is called:

    A. Reproductive ecology
    B. Autecology
    C. Synecology
    D. Ecological niche