1. In plants, a common symptom caused by deficiency of P, K, Ca and Mg is the

2. Function of zinc is

3. Which of the following is a group of micronutrients?

4. The process of conversion of NO

5. The formation of first stable product of nitrogen fixation is catalysed by enzyme

6. Manganese toxicity leads to deficiency of

7. Chlorosis will occur if a plant is grown in

8. Choose the correct function of magnesium.

9. Mineral salts which are absorbed by the roots from soil are in the form of

10. Which one of the following mineral elements plays an in biological nitrogen fixation?