Permanent change in soil is due to__________________?

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 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

3. Slipperiness is due to__________________?

   A. Covalent bond
   B. Vander walls forces
   C. Wire bond
   D. None of the above

4. Year 1900 was significant for geneticists due to__________________?

   A. Discovery of gene
   B. Principles of linkage
   C. heredity theory
   D. Rediscovery of Mendel’s

5. In a monohybrid cross, 2 heterozygous individuals were crossed, phenotypic ratio came to be (2:1), it is due to__________________?

   A. Dominant lethal genes in heterozygous individuals
   B. Dominant lethal genes in homozygous individuals
   C. Dominant epistasis
   D. None of the above

6. The smell in onion bulb is due to__________________?

   A. bad odour of the soil
   B. Much sugar
   C. Sulphur components
   D. Fleshy leaves

7. Chilling injury in fruits occurs due to__________________?

   A. Accumulation of ethanol
   B. Accumulation of acetaldehyde
   C. Accumulation of toxic compounds
   D. All the above

8. The flavor of butter, milk and cheese due to__________________?

   A. Long chain fatty acids
   B. Short chain fatty acids
   C. Saturated fatty acids
   D. Unsaturated fatty acids

9. Being a soil scientist, do you know which is the popular book of soil science of Nyle.C.brady, 14th edition available in markets:

   A. Fundamentals of soil
   B. Essenttials of soil sciences
   C. The nature and properties of soil
   D. The mechanics of soil

   Submitted by: Shafiq Rehman

10. Pedogenic processes bring about changes in the parent materials in the form of _____________________, within the soil body (soil profile)?

    A. Additions, losses
    B. Transfers and transformations
    C. both A and B
    D. None of the above

    Submitted by: Shafiq Rehman