Question
| Waves on ECG | Heart Activity | Caused due to |
| P wave | Atrial contraction | —————- |
| QRS wave | —————– | Ventricular depolarization |
| T wave | —————– | Ventricular repolarization |
| Waves on ECG | Heart Activity | Caused due to |
| P wave | Atrial contraction | —————- |
| QRS wave | —————– | Ventricular depolarization |
| T wave | —————– | Ventricular repolarization |
Complete the following Table
| Waves on ECG | Heart Activity | Caused due to |
| P wave | Atrial contraction | Atrial depolarization |
| QRS wave | Ventricular contraction | Ventricular depolarization |
| T wave | Ventricular contraction | Ventricular repolarization |
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| Column A | Column B |
| (1) Mutualism | ————– |
| (2) Commensalism | ————— |
| (3) Parasitism | ————– |

| Column A | Column B |
| (1) Plasma proteins | ———— |
| (2) Nitrogenous waste | ———— |
| (3) Inorganic salts | ———— |
| Resistance to insects | Morphological characters |
| Jassids | ———— |
| Cereal leaf beetle | ———— |
| Stem borers | ————– |
| Bollworms | ————— |
| Column A | Column B |
| (1) Sensory | ————– |
| (2) Motor | ————– |
| (3) Mixed | ————– |
| Column A | Column B |
| (1) Pituitary | ———— |
| (2) Thyroid | ———— |
| (3) Adrenal Cortex | ———— |
Complete the table-Related to outbreeding devices.
| Type | Description | Example |
| 1. ———— | Unisexual flowers/Monoecious or dioecious plants | Papaya, Maize |
| 2. ———— | Mechanical device to prevent Self-Pollination – Natural physical barrier | —————- |
| 3. Prepotency | ——————– | Apple |
| 4.Heteromorphy | ——————– | Primula |
| 5. Protandry | Androecium matures earlier than gynoecium | —————- |
| Column A | Column B |
| (1) Phagocytic cells | ———— |
| (2) Cells involved in giving immune response | ———— |
| (3) Cells that increase during allergic and anti-allergic responses | ———— |
| Column A | Column B |
| (1) Selective synthetic herbicide | ———— |
| (2) Seedless fruits | ———— |
| (3) Flowering in pineapple | ———— |
| (4) Synthetic auxin | ———— |
| (5) Agent orange | ———— |