Read the following statements and select the correct option.
Statement 1 : Active immunity is developed when a person's own cells produce antibodies in reponse to infection or vaccine.
Statement 2 : Injection of snake antivenom against snake bite is an example of active immunisation.

Read the following statements and select the correct option. Statement 1: Ranikhet disease is a disease of poultry. Statement 2: It is cause by a virus.

Read the following statements select the correct option. Statement 1 : Ranikhet disease is a disease of poultry. Statement 2: It is caused by a virus.

Read the following statements select the correct option. Statement 1 : Ranikhet disease is a disease of poultry. Statement 2: It is caused by a virus.

Read the following statements select the correct option. Statement 1 : Ranikhet disease is a disease of poultry. Statement 2: It is caused by a virus.

Read the following statements select the correct option. Statement 1 : Ranikhet disease is a disease of poultry. Statement 2: It is caused by a virus.

Read the given statements and select the correct option. Statement 1: Ethylene is a gaseous hormone. Statement 2: Ethylene causes climacteric ripening of fruits.

Read the following statements and select the correct option Statement 1: Virus are inert crystalline structure outside a living cell. Statement 2 : Virus are cellular organisms.

Read the given statements and select the correct option. Statements 1: Blood is colourless in the insects. Statement 2: Insect blood has no role in O_(2) transport.

Read the given statements and select the correct option. Statements 1: Blood is colourless in the insects. Statement 2: Insect blood has no role in O_(2) transport.

Read the following statements and select the correct option. Statement 1 : When the immune system fails to recognise 'sell' from 'nonself' and starts destroying body's own proteins, this leads to auto-immune diseases. Statement 2 : Addison's disease and rheumatoid arthritis are auto-immune diseases.