Assertion (A): | The O blood group is considered the universal donor. |
Reason (R): | Both anti-A and anti-B antibodies are present in the plasma of a person with blood group O. |
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. |
Statement I: | Lymph is a colourless fluid containing specialized lymphocytes which are responsible for the immune responses of the body. |
Statement II: | Lymph carries oxygen and nutrients to the tissues. |
1. | 3 → 1 → 4 → 2 | 2. | 2 → 3 → 1 → 4 |
3. | 1 → 3 → 4 → 2 | 4. | 4 → 2 → 1 → 3 |
I: | The P-wave represents the electrical excitation (or depolarization) of the atria. |
II: | The QRS complex represents the depolarization of the ventricles, which initiates the ventricular contraction. |
III: | The end of the T-wave marks the end of diastole. |
Assertion(A): | Left ventricle pumps more blood than the right ventricle |
Reason(R): | Left ventricle pumps deoxygenated blood and the right ventricle pumps oxygenated 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 but (R) is False. |
Assertion(A): | A decrease in lymphocyte count in the blood will lead to an increased susceptibility to infections. |
Reason(R): | Lymphocytes are responsible for phagocytosis in innate immune response. |
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. |
Statement I: | The hepatic portal vein transports blood from the liver to the heart. |
Statement II: | The hepatic portal vein carries blood rich in nutrients absorbed from the intestines. |
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. |
Assertion (A): | SA node is called the pacemaker of the human heart. |
Reason (R): | SA node is auto-excitable. |
1. | Both (A) and (R) are True and (R) correctly explains (A). |
2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
3. | (A) is True; (R) is False. |
4. | Both (A) and (R) are False. |