Many plant species need very large amount of water. They are: ___________?

Related Mcqs:

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

   A. N, P, K B. S, Mg, Ca, Fe C. Both a & b D. None of a & b Submitted by: Shafiq Rehman...

2. 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...

3. Potassium plays a significant role in the transport of water & nutrients through the plant in the xylem. When the supply of K is reduced, the transportation of ___________________ is depressed:

   A. Nitrates, Phosphates B. Calcium, magnesium C. Amino acids D. All of the above Submitted by: Shafiq-ur-Rehman...

4. The maximum amount of water which a soil can hold after free drainage has ceased is called as_______?

   A. Water potencial B. Water use efficiency C. Water harvesting D. Water holding capacity Submitted by: Shafiq Rehman...

5. The amount of water that can be absorbed by an oven dry soil at 105•c when it is exposed to an atmosphere of 100% relative humidity is called:

   A. Field Capacity (FC) B. Maximum water holding capacity C. Hygroscopic coefficient D. Permanent wilting point Submitted by: Shafiq-ur-Rehman...

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

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

7. The evolution of new species is known as_____________?

   A. Specialization B. Speciation C. Smog D. None of these Submitted by: Shafiq Rehman...

8. The most suitable species for reclamation of sandy soils is:_________?

   A. Casuarina equiselifolia B. Acacia spp C. Azadirachta indica D. All of the above Submitted by: Shafiq Rehman...

9. The suitable species for reclamation of saline & sodic soil is:__________?

   A. Casuarina equisetifolia B. Albizia lebbeck C. Both A & B D. None of the above Submitted by: Shafiq Rehman...

10. Plant & animal residues contain: ___________?

    A. Sugar, celluloses, hemicelluloses B. Proteins, lignins C. Waxes, lipids D. All of the above Submitted by: Shafiq-ur-Rehman...