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

Related Mcqs:

1. These are generally, but not always, developed above the birch zone and in patches, sometimes extensive, within it, probably conditioned by edaphic and biotic factors, in Kashmir, Gilgit, Chitral and Hazara. This type ascends normally to ______ or more above the sub-alpine forests and climate must be similar but more severe than in sub-alpine forests:

   A. 140 m
   B. 150 m
   C. 160 m
   D. 170 m

2. Dry sub-tropical broad-leaved forests having:

   A. Low forest of branchy trees forming a canopy
   B. Varying in density from complete closure
   C. Under the most favourable conditions to scattered single trees or groups on the driest sites
   D. Typically field in with a shrub growth which similarly varies in density
   E. All of the above

3. Soils transported by air is called:

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

4. Soils transported by water are called:

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

5. The plants growing on saline soils are called:

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

6. The optimum temperature for seedling growth in the upper gangetic plains is around:

   A. 10? – 15?C
   B. 5? – 10?C
   C. 20? – 25?C
   D. 30? – 40?C

7. A three year old plant of poplar and Tamarix gallica consumes ______ liters and ____ liters of water per day, respectively under optimum supply conditions:

   A. 45,60
   B. 50,70
   C. 60,80
   D. None of these

8. 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

9. 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

10. 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