Immuno-suppressants are administered to burn patients or during organ transplantation to suppress: 
1. Innate immunity 
2. Cytokine Storm 
3. Humoral immunity 
4. Cell-mediated immunity 
Give below are two statements :
| Statement I: | When an infected female Anopheles mosquito bites, it releases gametocytes of plasmodium into the healthy person. | 
| Statement II: | The female Anopheles mosquito takes up sporozoites of Plasmodium with blood meal from an infected person, suffering from malaria. | 
In light of the above statements, choose the most appropriate answer from the options given below :
1. Statement I is correct but Statement II is incorrect. 
2. Statement I is incorrect but Statement II is correct.
3. Both Statement I and Statement II are correct. 
4. Both Statement I and Statement II are incorrect. 
| 1. | B cells | 2. | interleukin-2 | 
| 3. | interleukin-1 | 4. | histamines | 
| Assertion(A): | Second infection of the same pathogen is quickly eliminated. | 
| Reason(R): | Killer T cells becomes hyperactivated, and destroy extracellular pathogens | 
| 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. | Both (A) and (R) are false. | 
| 1. | B cells confer active immunity; cytotoxic T cells confer passive immunity | 
| 2. | B cells kill viruses directly; cytotoxic T cells kill virus infected cells. | 
| 3. | B cells secrete antibodies against a virus; cytotoxic T cells kill virus-infected cells | 
| 4. | B cell accomplish humoral immunity. | 
| 1. | Variable Region – determines antibody specificity for an epitope | 
| 2. | Immunioglobulins – glycoproteins that form epitopes | 
| 3. | Constant Region – determines class and function of antibody | 
| 4. | IgG – most abundant circulating antibodies, confer passive immunity to fetus |