The ration of volume of pores in the soil to the total soil volume is referred to as:

Related Mcqs:

1. Water pores are found in which of the following plants?

   A. Xerophytes
   B. Mesophytes
   C. Hydrophytes
   D. Halophytes

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 ration of food energy assimilated to the food energy ingested is called:

   A. Trophic level efficiency
   B. Photosynthetic efficiency
   C. Net production efficiency
   D. Assimilation efficiency

4. Movement ration means:

   A. Estimation of movement ration from actual diameter growth of individual tree
   B. 4 trees will remain in 6″ dia class
   C. 5 trees will move to 7″ dia class
   D. 6 trees will move to 8″ dia class
   E. All of the above

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. 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

8. Which of the following horizons is generally referred to as the illuvial zone?

   A. Horizon-B
   B. Horizon-A
   C. Horizon-O
   D. Horizon-C

9. Relative biological effectiveness (RBE) is usually referred to damages caused by:

   A. Pollution
   B. High temperature
   C. Low temperature
   D. Radiation

10. The salient features of the strategy 1992 relating to wildlife, referred to here as BIODIVERSITY, are:

    A. The strategy to improve the situation
    B. Action Plan
    C. Actions/Interventions
    D. All of the above