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...