Development of soil from the parent rock is termed as:

Related Mcqs:

1. Development of soil from parent rock is termed as:

   A. Edaphic factor
   B. Pedogenesis
   C. Edaphotropism
   D. Edaphic climax

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. 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

4. 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%

5. 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

6. 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

7. Plants growing in rock crevices are called:

   A. Sciophytes
   B. Chasmophytes
   C. Helophytes
   D. None of these

8. The rock cover of the earth is called:

   A. Lithosphere
   B. Xerosphere
   C. Pasmmosphere
   D. Pedosphere

9. A part of the rock forming material of the earth comprises:

   A. Oxides of Ca and Na
   B. Oxides of Ca and K
   C. Aluminosilicates of Na, K and Ca
   D. Nitrates of Fe and Al

10. 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