| I: | are of two types, where one is responsible for humoral and the other for cell mediated immune response. |
| II: | secrete antibodies into body fluids. |
| I: | ‘memory’ of the immune system. |
| II: | ability to distinguish between self and non-self. |
| I: | Benign tumors normally remain confined to their original location and do not spread to other parts of the body and therefore, cause little damage. |
| II: | The malignant tumors are a mass of proliferating cells called neoplastic or tumor cells and spread to other parts of the body. |
| 1. | LSD | 2. | Cocaine |
| 3. | Atropine | 4. | Paracetamol |
| 1. | Cocaine | 2. | Atropine |
| 3. | Wine | 4. | Nicotine |
| Assertion (A): | Any subsequent encounter with the same pathogen elicits a highly intensified secondary or anamnestic response in human body. |
| Reason (R): | When our body encounters a pathogen for the first time, it produces a response called primary response which is of low intensity. |
| 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. | (A) is False, (R) is True |
| I: | sexual contact with infected person |
| II: | mere touch or physical contact |
| III: | transfusion of contaminated blood and blood products |
| I: | mainly contains lymphocytes and phagocytes. |
| II: | acts as a filter of the blood by trapping blood-borne micro-organisms. |
| III: | has a large reservoir of erythrocytes |