In alkaline soil which form of phosphorus uptake by plants?

Related Mcqs:

1. In acidic soil which form of phosphorus uptake by plants?

   A. Primary orthophosphate
   B. Secondary orthophosphate
   C. Both
   D. None of these

   Submitted by: gmsyed

2. In which form plant uptake phosphorus?

   A. H2po4
   B. HPO4-2
   C. Both
   D. Non of these

   Submitted by: gmsyed

3. Phosphorus (P) is the second major nutrient essential for plant growth. With the exception of Nitrogen (N) and Potassium (K), Phosphorus is required by plants in_________?

   A. Lesser quantities
   B. Greater quantities
   C. Not required
   D. The above statement is wrong

   Submitted by: Shafiq Rehman

4. 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

5. Mechanisms of material uptake by plants is by____________________?

   A. Diffusion
   B. Osmosis
   C. Root interception
   D. Mass flow

6. What happens when an saline-alkaline soil is reached with water:

   A. pH decrease, Ec increase
   B. pH & Ec both increase
   C. pH increase & Ec decrease
   D. None of these

   Submitted by: Mir Mehrbiyar

7. Loss of nitrogen in the form of NH3 in alkaline medium is known as_________?

   A. Denitrification
   B. Leaching
   C. Volatilization
   D. None of these

   Submitted by: Shafiq Rehman

8. The availability of essential nutrients from soil to the plants is controlled by the ________ properties of soil:

   A. Physical
   B. chemical
   C. Biological
   D. both A & B

   Submitted by: Shafiq Rehman

9. 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

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