Which essential mineral nutrient required by plants plays an important role in opening and closing of stomata?
1. Phosphorus
2. Potassium
3. Calcium
4. Magnesium
1. | Copper | 2. | Manganese |
3. | Molybdenum | 4. | Magnesium |
List I | List II | ||
A. | Iron | I. | Synthesis of auxin |
B. | Zinc | II. | Component of nitrate reductase |
C. | Boron | III. | Activator of catalase |
D. | Molybdenum | IV | Cell elongation and differentiation |
Options: | A | B | C | D |
1. | II | IV | I | III |
2. | III | II | I | IV |
3. | II | III | IV | I |
4. | III | I | IV | II |
1. | Potassium | 2. | Calcium |
3. | Nitrogen | 4. | Phosphorus |