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

Related Mcqs:

1. Items needed for synthesis of plant food in green leaves are _________ & the process through which it takes place is called photosynthesis:

   A. Sunlight
   B. Chlorophyll
   C. Water & plant nutrients
   D. All of the above

   Submitted by: Shafiq Rehman

2. In low-rainfall areas, huge shifting sand dunes are commonly found, particularly near human habitations. Techniques of afforesting the shifting dunes needed to be implemented. These techniques consist of___________?

   A. Treatment of shifting sand-dunes by fixing barriers in parallel stripes or in a chess-board design, using the local shrub material starting from the crest of the dunes to protect the seedlings from burial or exposure by the blowing of sand.
   B. Protection against biotic interference
   C. Both a & b
   D. None of these

   Submitted by: Shafiq Rehman

3. Elements essentially required for growth of all plants species are___________________?

   A. 32
   B. 15
   C. 16
   D. 3

4. Which of the following nutrient elements are regarded as energy exchangers:

   A. Hydrogen
   B. Oxygen
   C. Both A & B
   D. None of these

   Submitted by: Shafiq Rehman

5. Large pieces of erupted magma are called_____________________?

   A. Volcanic ash
   B. Volcanic block
   C. Dike
   D. Sill

6. Inorganic constituents vary in size from fine clay particles _________ mm to large _________ mm gravel and rock:

   A. < 0.002 mm- >2 mm
   B. 0.5 mm – 1.0 mm
   C. 0.02 mm- 0.2 mm
   D. None of the above

   Submitted by: Shafiq Rehman

7. The available form of sulphur for plant is___________________?

   A. S2
   B. SO-2
   C. SO3
   D. SO2

8. If the chlorophyll content in plant increases, the solar radiation transmitted:

   A. Increases
   B. Decreases
   C. Constant
   D. None of these

   Submitted by: Shafiq Rehman

9. The lower leaves turn yellow and in some crops they quickly start drying up as if suffering from shortage of water, stunted growth, leaves & fruits shedding & whole plant becomes yellow, are deficiency symptoms of:_________?

   A. Potash
   B. Nitrogen
   C. Calcium
   D. Both a & c

   Submitted by: Shafiq Rehman

10. 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