Question
Define crop rotation.
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Name the causal organism of kala-azar.
State whether iron is a micronutrient with respect to plants.
What will happen, when we use sodium nitrate excessively in the soil?
What will happen if an animal cell is placed in hypertonic solution?
| Column-I | Column-II | ||
| P. | Nosema apis | I | New castie disease |
| Q. | Aspergillus fumigates | II | Nosema disease |
| R. | Berereline virus | III | Pebrine |
| S. | Nosema bombycis | IV | Grasserie |
| T. | Paramyxo virus | V | Stonebrood |