Q. No.During the initiation of coagulation of blood, the platelets are activated by–
1.
Thrombin
2.
Trauma
3.
Ca++
4.
Thrombokinase
To avoid Erythroblastosis Foetalis–
| 1. | the mother is administered anti–Rh antibodies. |
| 2. | the baby is administered Rh antibodies. |
| 3. | the mother is administered Rh antibodies |
| 4. | the baby is administered anti–Rh antibodies |
RBCs in human are:
| 1. | Biconcave-and nucleated | 2. | Biconvex and nucleated |
| 3. | Biconcave and enucleated | 4. | Biconvex and enucleated |
Histamine, serotonin and heparin are secreted by:
| 1. | Thrombocytes | 2. | Lymphocytes |
| 3. | Monocytes | 4. | Basophils |
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
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