Large portions of the earth with similar climate, soil ,plant and animal life community is known as:

Related Mcqs:

1. Any material such as straw, sawdust, leaves, plastic films, & loose soil that is spread upon the surface of the soil to protect the soil & plant roots from the effects of raindrops, soil crusting, freezing or evaporation:

   A. Mull
   B. Mulch
   C. Mycorrhizae
   D. Muck

   Submitted by: Shafiq Rehman

2. Soil pores created by the animal such as earthworm and plant root are called_________?

   A. Biopores
   B. Diameter
   C. Mesopores
   D. Microspores

   Submitted by: Hakeem Taj Shapuki

3. The capacity of a soil to function on sustained basis promoting plant & animal health:

   A. Soil neutrality
   B. Soil quality
   C. Both a & b
   D. None of these

   Submitted by: Shafiq Rehman

4. The capacity of a soil to function on sustained basis promoting plant and animal health:

   A. Soil Quality
   B. Soil Pollution
   C. Soil Salinity
   D. None of these

   Submitted by: Shafiq Rehman

5. Soil additive which stabilizes the soil, improves resistance to erosion, increases to permeability to air & water, improves texture, eases cultivation or otherwise improves soil quality:

   A. Soil amendment
   B. Soil conditioner
   C. Both a & b
   D. None of the above

   Submitted by: Shafiq Rehman

6. The study of relationship between soil properties & plant production is known as:_________?

   A. Pedology
   B.  Soil Science
   C. Agronomy
   D. None of these

   Submitted by: Shafiq Rehman

7. According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation process. As the case in arid and semi-arid climates elsewhere in south-central/southern Asia and Sub-Saharan Africa; _________________ are among the major causes of soil degradation and desertification?

   A. Drought stress
   B. Accelerated erosion & salinization
   C. Depletion of soil fertility and SOM
   D. All of the above

   Submitted by: Shafiq Rehman

8. Plant & animal residues contain: ___________?

   A. Sugar, celluloses, hemicelluloses
   B. Proteins, lignins
   C. Waxes, lipids
   D. All of the above

   Submitted by: Shafiq-ur-Rehman

9. Nutritive elements needed in large quantities to ensure normal plant development:

   A. N, P, K
   B. S, Mg, Ca, Fe
   C. Both a & b
   D. None of a & b

   Submitted by: Shafiq Rehman

10. Many plant species need very large amount of water. They are: ___________?

    A. Hydrophytes
    B. Hygrophytes
    C. Both a & b
    D. None of these

    Submitted by: Shafiq-ur-Rehman