| Statement I: | Every 100 ml of oxygenated blood can deliver around 5 ml of O2 to the tissues under normal physiological conditions. |
| Statement II: | Every 100 ml of deoxygenated blood delivers approximately 4 ml of CO2 to the alveoli. |
| 1. | is equal to the amount of oxygen delivered by 100 ml of oxygenated blood at tissues under normal physiological conditions. |
| 2. | is less than the amount of oxygen delivered by 100 ml of oxygenated blood at tissues under normal physiological conditions. |
| 3. | is twice the amount of oxygen delivered by 100 ml of oxygenated blood at tissues under normal physiological conditions. |
| 4. | is more than 10 times higher than the amount of oxygen delivered by 100 ml of oxygenated blood at tissues under normal physiological conditions. |
| Statement I: | Even after exhaling as forcefully as possible, one still has air in the lungs. |
| Statement II: | The value for vital capacity is higher that the value for functional residual capacity in a healthy adult. |
| Assertion(A): | At the alveoli, oxygen diffuses into the blood and carbon dioxide diffuses out from the blood. |
| Reason(R): | The partial pressure of carbon dioxide and oxygen is higher in alveoli than in the blood. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False and (R) is True. |
| 1. | High pO₂, low pCO₂, high H⁺ concentration, and high temperature |
| 2. | Low pO₂, high pCO₂, low H⁺ concentration, and low temperature |
| 3. | High pO₂, low pCO₂, low H⁺ concentration, and low temperature |
| 4. | Low pO₂, low pCO₂, high H⁺ concentration, and high temperature |
| A. | Each haemoglobin molecule can carry a maximum of four molecules of O₂. |
| B. | The oxygen dissociation curve is linear and steep under all physiological conditions. |
| C. | Factors like high pCO₂, high temperature, and increased H⁺ concentration favour the release of O₂ at the tissues. |
| D. | On average, 100 ml of oxygenated blood delivers about 5 ml of O₂ to the tissues. |