Q. No.B and T forms, responsible for the immune response are the type of:
1.
Thrombocytes
2.
Lymphocytes
3.
Eosinophils
4.
Granulocytes
Assertion : In mollusca, circulatory system is of closed type.
Reason : The blood of mollusca contains haemoglobin
- 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 : Histamine is involved in allergic and inflammatory reactions.
Reason : Histamine is a vasodilator
- 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): | Heart valves resemble swing doors in action. |
| Reason (R): | Valves are present in the heart chamber, at the opening of the heart into large arteries and veins. |
| 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 : 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. |
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