The deficient level of N (%) in plants suggested by various workers is____________________?

Related Mcqs:

1. The toxicity level of Zn (mg/kg) in plants suggested by some workers is___________________?

   A. > 50 mg kg-1
   B. > 10 mg-1
   C. > 400 mg kg-1
   D. None of these

2. After self pollination of red flowered plants out of 40 plants of progeny were white flowered. this indicates that the plants are__________________?

   A. Heterogeneous
   B. Heterozygous
   C. Homogenous
   D. Homozygous

3. How much percentage of soils of Pakistan are deficient in P______________________?

   A. 60
   C. 50-70
   D. 80-90

4. The deficient macronutrient in the sodic soils is:_______?

   A. Mg
   B. Ca
   C. Mo
   D. Cu

   Submitted by: Shafiq Rehman

5. Which element is deficient in milk _________?

   A. Iron
   B. Phosphorus
   C. Sodium
   D. Calcium

   Submitted by: Dr Sarfaraz Mirwani

6. The most abundant metal in the earth’s crust and toxic to plants in low concentration is____________________?

   A. Mo
   B. Al
   C. Fe
   D. All the above

7. The most highly advanced division in plants kingdom is____________________?

   A. Pteridophtes
   B. Tracheophyta
   C. Taxonomy
   D. None of the above

8. A group of plants providing food, fiber and shelter is____________________?

   A. Gymnosperm
   B. Angiosperm
   C. Dieetyledens
   D. Monocotyledons

9. 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

10. The EC: SAR and RSC values suggested by WAPDA for 3rd class irrigation water(C,S,R,) are____________________?

    A. ECi:<1.5, SAR < 10 & RSC< 2.5
    B. ECi:>1.5, SAR > 10 & RSC> 2.5
    C. ECi:>1.5, SAR 2.5
    D. Both a & b