Dark coloured soils are considered most fertile as they contain:

Related Mcqs:

1. The phenomenon describing the formation of a blue-grey coloured layer at the bottom of the solum due to ferrous compounds is:

   A. Gleization
   B. Mineralization
   C. Laterization
   D. Podsolization

2. A fertile soil is likely to have a pH value of:

   A. 3-4
   B. 8-9
   C. 6-7
   D. 10-11

3. Eroded soils are:

   A. Rich in plant nutrients
   B. Unaltered in plant nutrients
   C. Devoid of plant nutrients
   D. All of these

4. Plants growing in oxygen deficient soils possess:

   A. No roots
   B. Longer roots system
   C. Aerial roots system
   D. Shallow root system

5. In coarse textured soils:

   A. There is no soil air
   B. Water retaining capacity is high
   C. Pore space is narrow
   D. Pore frequency is low

6. Soils transported by air is called:

   A. Eolian
   B. Aerial
   C. Residual
   D. Colluvial

7. Soils having sub-optimum concentration of nutrient solution are called:

   A. Hypotrophic
   B. Eutrophic
   C. Heterotrophic
   D. Oligotrophic

8. Proximity of water level at low depths of soils results in development of:

   A. No roots at all
   B. Curved roots
   C. Long roots
   D. Shallow roots

9. The soils that are fully laden with water i.e., water logged, are known are:

   A. Physically dry soils
   B. Physiologically dry soils
   C. Alkaline soils
   D. Acidic soils

10. The depleted soils can be enriched by the addition of:

    A. More soil
    B. Drugs
    C. Chemical fertilizers
    D. Cattle dung