Water available above the top of root zone of plants is about 15% of soil moisture contents, is mostly not available to plants celled_________________?

Related Mcqs:

1. Water available in root zone of plants, is about 50% of soil moisture content. which is always available to the plants is called________________?

   A. Effective water
   B. Soil-moisture content
   C. Capillary water
   D. All are correct

2. Water logging is the state of the soil where the water table brought ______________capacity or root zone of plants?

   A. Far from
   B. Within
   C. Below
   D. Near

3. The field capacity is the amount of water retained by a saturated soil mass after being acted by gravity. The amount of water required to bring the soil moisture content of that soil up to field capacity is called__________________?

   A. Soil-moisture deficiency
   B. Field-moisture deficiency
   C. Equivalent-moisture deficiency
   D. a and b are correct

4. In the initial stage of rainfall, when soil moisture available in the root zone is very low, the rate of infiltration ?

   A. Increases
   B. Reduces
   C. remain stagnant
   D. Normal

5. The water particles held in soil pores of root zone by _____________ against gravity and is known as capillary water?

   A. Cohesive force
   B. Capillary force
   C. Tension force
   D. Gravity force

6. Readily available moisture is the % of moisture that is always easily available to plant and this moisture is called _________________?

   A. 70%
   B. 75%
   C. 80%
   D. 85%

7. the phenomenon of evaporation from water surfaces, from soil surfaces around the plants and from plants and transpiration from plants is called ___________________?

   A. Evapotranspiration
   B. Transpiration
   C. Evaporation
   D. All are correct

8. The field capacity is the water retained by a saturated soil after free drainage of surplus water to the ground water table but the water retained by a saturated soil after being centrifuged by a centrifugal force of 1000 times that of gravity is called________________?

   A. Soil moisture
   B. Equivalent moisture
   C. Field moisture
   D. Available moisture

9. The minimum moisture content at which a water drop if placed on a smooth surface of soil will not be absorbed immediately by the soil is called __________________?

   A. Soil moisture content
   B. Moisture content
   C. Soil saturation
   D. All are correct

10. Water storage efficiency in the root zone depends upon__________________?

    A. Porosity
    B. Fine particles of soil
    C. Coarse particles of soil
    D. Climatic conditions