Question

Select the correct statement with respect to diseases and immunisation:
(1) Injection of snake antivenom against snake bite
is an example of active immunisation,
(2) If due to some reason B-and T-lymphocytes are
damaged, the body will not produce antibodies
against a pathogen.
(3) Injection of dead/inactivated pathogens causes
passive immunity
(4) Certain protozoans have been used to mass
produce hepatitis B vaccine​

Answer 1

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THE ANSWER FOR YOUR QUESTION IS

OPTION 4

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Answer 2

Answer:

➣ Select the correct statement with respect to diseases and immunisation :-

❶ Injection of snake antivenom against snake bite is an example of active immunisation. ☒

❷ If due to some reason B and T - lymphocytes are damaged, the body will not produced antibodies against a pathogen. ☑

❸ Injection of dead/inactivated pathogens causes passive immunity. ☒

❹ Certain protozoans have been used to mass produce hepatitis B vaccine. ☒

Explanation:

$\mapsto$ Clone of B-cells is called as plasma cells which produce antibodies. Helper T-cells secrete IL-2 which stimulate B-cells to produce antibodies. For example injection of snake antivenom against snake bite that provides artificially acquired passive immunity.

Hence the correct options is ❷ ☑

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