The available form of nitrogen for plants is_________________?

Related Mcqs:

1. Foliar application of nitrogen means applying nitrogen in solution form to___________________?

   A. Whole plant
   B. Leaves
   C. Stem only
   D. Flowers only

2. Excess of nitrogen to plants causes_________________?

   A. Delay in ripening
   B. Delay in growth
   C. Delay in germination
   D. All the above

3. Preferable form of nitrogen for rice under submerged soil conditions is ____________?

   A. NH4
   B. NO3
   C. NO2
   D. All of these

   Submitted by: Muhammad Rehan

4. The deficient level of N(%) in plants suggested by various workers is_________________?

   A. <2%
   B. <1%
   C. <5%
   D. 10%

5. The enzyme responsible for biological nitrogen fixation is________________?

   A. Lipase
   B. Nitrogenase
   C. Isomerase
   D. Kinease

6. Azolla which fixes nitrogen in rice field is__________________?

   A. Bacteria
   B. Fungi
   C. Ferm
   D. None of the above

7. There has been emphasis on the conservation of wild relatives of cultivated plants because wild plants________________?

   A. Grow better then cultivated plants
   B. Serve, as valuable fodder plants
   C. Needed to understand the origin of cu;cultivated plants
   D. Carrying many useful genes which are lost in cultivated plants

8. The herb plants have___________________?

   A. Woody stem
   B. Non-woody stem
   C. Trunk
   D. All the above

9. Plants grown in dry region are_________________?

   A. Xerophytes
   B. Thermophyts
   C. Mesophytes
   D. Halophytes

10. Mg in plants act as___________________?

    A. Protein activator
    B. Enzyme activator
    C. Starch activator
    D. None of the above