That rain fall which is effectively consumed by the plants to meet its consumptive needs is called__________________?

Related Mcqs:

1. An area is officially declared as drought effected if the mean Annual rain fall is less than of the annual Potential evaporation,______________?

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

2. The Indus plain is the main agricultural producing region in the country which receives about________________m m of rain fall annually?

   A. 100 mm
   B. 150 mm
   C. 175 mm
   D. 200 mm

3. How much annual rain fall is in sargodha?

   A. 400 mm
   B. 450 mm
   C. 500 mm
   D. 550 mm

   Submitted by: Muhammad Aiyub

4. 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

5. From a water fall, if water is falling down at the rate of 100 N/sec: on the blades of a turbine when the height of fall is 100 m the power delivered to turbine will be______________?

   A. 1000 kw
   B. 10,000 kw
   C. 100 kw
   D. 5000 kw

6. The delta the total depth of water consumed by crop up to its maturity, the delta of cotton is ____________________?

   A. 100 cm
   B. 80 cm
   C. 50 cm
   D. 40 cm

7. The delta the total depth of water consumed by a crop from 1st watering when matures, the delta for rice is___________________?

   A. 100cm
   B. 120cm
   C. 80cm
   D. 75cm

8. 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

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

   A. Capillary water
   B. Irrigation water
   C. Effective water
   D. Hygroscopic water

10. The quantity of water lost by transpiration from the plants or crops and evaporation from fields adjacent to these plants is called ___________________?

    A. Evapo-transpiration
    B. Consumptive use
    C. Un-confined water
    D. a & b are correct