Q. 10

Study the following statements and state whether they are true or false.

i) Colour blindness is a genetic disorder, whereas night blindness is a nutritional disorder.

ii) Pernicious anaemia is a nutritional deficiency disease, whereas sickle cell anaemia is a genetic disease / disorder.

iii) Administering TT injection to an injured child is related to passive artificial immunity, whereas giving BCG vaccine is active artificial immunity.

iv) Malaria is a bacterial disease, whereas ring worm is a viral disease.

Answer :

i) True


Colour blindness is a genetic disorder, whereas night blindness is a nutritional disorder. Night blindness is caused due to deficiency of vitamin A. Colour blindness is a genetic disorder caused due to defective gene.


ii) True.


Pernicious anaemia is caused due to deficiency of iron, whereas sickle cell anaemia is occur due to defective red blood cells.


iii) False.


Administering TT injection to an injured child to protect from tetanus toxoid and BCG vaccine is given to protect from tuberculosis. Both of these vaccination provide artificial active acquired immunity.


iv)False.


Malaria is a disease caused by a protozoa, named Plasmodium whereas ring worm is caused by a fungus.


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