| Column-I (Component) |
Column-II (Function) |
||
| A. | Platelets | P. | Transport oxygen and carbon dioxide |
| B. | White Blood Cells | Q. | Transport nutrients and hormones |
| C. | Red Blood Cells | R. | Defence and immunity |
| D. | Plasma | S. | Blood clotting |
| 1. | To reduce the pressure in venous blood. |
| 2. | To maintain the oxygen concentration in venous blood. |
| 3. | To regulate the blood entering capillaries. |
| 4. | To prevent backflow of blood due to low pressure. |
| 1. | Thrombokinase directly converts fibrinogen into fibrin, which forms a clot. |
| 2. | Thrombokinase is an enzyme complex that converts prothrombin into thrombin, which subsequently converts fibrinogen into fibrin. |
| 3. | Thrombokinase prevents clot formation by inhibiting thrombin activity. |
| 4. | Thrombokinase dissolves clots by breaking down fibrin into smaller fragments. |
| Statement I: | Blood in the pulmonary vein is oxygenated. |
| Statement II: | Blood in the pulmonary artery is deoxygenated. |
| 1. | Statement I is correct; Statement II is correct. |
| 2. | Statement I is correct; Statement II is incorrect. |
| 3. | Statement I is incorrect; Statement II is correct. |
| 4. | Statement I is incorrect; Statement II is incorrect. |
| 1. | The right and left atria |
| 2. | The right and left ventricles |
| 3. | The right atria and the left ventricle |
| 4. | The left atria and the left ventricle |
| 1. | The foetus may suffer from severe anaemia and jaundice due to maternal Rh antibodies attacking fetal RBCs. |
| 2. | The mother’s immune system remains unresponsive to Rh-positive RBCs in subsequent pregnancies. |
| 3. | The foetus develops an overproduction of RBCs to counteract maternal antibodies. |
| 4. | The condition only affects the first pregnancy, with no impact on later pregnancies. |
| Oxygenated Blood | Deoxygenated Blood | |||
| 1. | Left atrium | Left ventricle | Right atrium | Right ventricle |
| 2. | Left atrium | Right atrium | Left ventricle | Right ventricle |
| 3. | Left atrium | Right ventricle | Right atrium | Right ventricle |
| 4. | Right atrium | Right ventricle | Left atrium | Left ventricle |
| 5. | Left ventricle | Right atrium | Left atrium | Right ventricle |
| 1. | Neutrophils are the most abundant cells (60-65 per cent) of the total WBCs and basophils are the least (0.5-1 per cent) among them. |
| 2. | Neutrophils and monocytes (6-8 per cent) are phagocytic cells which destroy foreign organisms entering the body. |
| 3. | Basophils secrete histamine, serotonin, heparin, etc., and are involved in inflammatory reactions. |
| 4. | Lymphocytes (2-3 per cent) resist infections and are also associated with allergic reactions. |
| 1. | Heart failure refers to the heart’s inability to pump sufficient blood, while cardiac arrest is when the heart stops beating entirely. |
| 2. | Heart failure only affects the ventricles, whereas cardiac arrest affects the atria. |
| 3. | Heart failure is reversible, while cardiac arrest is not. |
| 4. | Cardiac arrest is caused by hypertension, while heart failure is caused by valve malfunction. |