Q. No.Assertion : Closed circulatory system is more effective than open type.
Reason : The closed circulatory system considerably enhances the speed, precision and efficiency of circulation.
Assertion : Cardiac output rises during exercise.
Reason : Cardiac output helps in less oxygen consumption.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion : EEG is of immense diagnostic value in the cardiac diseases.
Reason : Defects in cardiac functions can be reflected in changes in the pattern of electrical potentials recorded in the EEG.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
| Assertion (A): | An artificial pacemaker can replace the sinoatrial node of heart. |
| Reason (R): | This is because, an artificial pacemaker is capable of stimulating the heart electrically to maintain its beats. |
| 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 but (R) is true. |
| Assertion (A): | Mixing of oxygenated and deoxygenated blood occurs in reptilian and amphibian hearts. |
| Reason (R): | This happens because of the incomplete partitioning of the auricle. |
| 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 but (R) is true. |
| Assertion (A): | Left ventricle of heart has a thinner wall than that of the right ventricle. |
| Reason (R): | Left ventricle needs to pump blood to nearby lungs only. |
| 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 but (R) is true. |
Assertion : Heart of fish contains only deoxygenated blood.
Reason : Oxygenated blood do not return back to the heart in fishes.
Assertion : Blood flows at a very slow velocity in the lacunae and sinuses of prawn.
Reason : This happens because of the absence of heart in the prawn.
| Assertion: | The increased permeability of the lymph capillaries is easily altered. |
| Reason: | The increased permeability of the capillary walls leads to oedema or swelling. |
| Assertion (A): | Blood pressure is arterial blood pressure. |
| Reason (R): | It is measured by sphygmomanometer. |
| 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 but (R) is true. |
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