Water is the major constituent of all living creatures. Biomass of plants is composed of ________% water:

Related Mcqs:

1. Previously Essential nutrients required for the growth of plants were sixteen. In recent time the essential nutrients required for the growth of plants are:_________?

   A. 16
   B. 17
   C. 18
   D. None of the above

   Submitted by: Shafiq Rehman

2. 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

3. Each layer of phyllosilicates is composed of two types of sheets:

   A. Tetrahedral sheet
   B. Triple octahedral sheet
   C. Octahedral sheet
   D. Both A & C

   Submitted by: Shafiq Rehman

4. 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

5. The practice of managing rows of closely planted woody plants with annual crops planted in alleys in between hedges is called as:________?

   A. Soil conservation hedges
   B. Woody Hedgerows
   C. Hedgerows intercropping
   D. All of these

   Submitted by: Shafiq Rehman

6. Sewage water consists of water and solids in the following percentage___________________?

   A. 99 & 1
   B. 90 & 10
   C. 80 & 20
   D. None of the above

7. Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed:

   A. Capillary water
   B. Hygroscopic water
   C. Gravitational water
   D. None of the above

   Submitted by: Shafiq Rehman

8. Which chemical used to prevent evaporation from surface of water in water bodies?

   A. Cetyle alcohol
   B. Methyle alcohol
   C. both A and B
   D. None of these

   Submitted by: Shafiq Rehman

9. Which chemical used to prevent evaporation from surface of water in water bodies?

   A. Cetyle alcohol
   B. Methyle alcohol
   C. both A and B
   D. None of these

   Submitted by: Shafiq Rehman

10. Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:

    A. Acid rain
    B. Neutral rain
    C. Both A & B
    D. None of the above

    Submitted by: Shafiq Rehman