Technology : Health And Diseases

Q 26 / 28

UPSC CSE Prelims 1997

Match List-I with List-II and select the correct answer by using the codes given below:

List-I List-II
A. Malaria 1. Bone marrow
B. Filaria 2. Brain
C. Encephalitis 3. Muscle
D. Leukaemia 4. Lymph node
5. Blood cells

A B C D

EXPLANATION

Correct Option (b):

  • A. Malaria is caused by Plasmodium parasites, which primarily infect and multiply within red blood cells.
  • B. Filaria, caused by filarial worms, affects the lymphatic system, leading to conditions like elephantiasis, with lymph nodes being a primary site of infection.
  • C. Encephalitis refers to the inflammation of the brain, often due to viral infections.
  • D. Leukaemia is a cancer of the blood-forming tissues, predominantly the bone marrow, characterized by the overproduction of abnormal white blood cells.

Incorrect Options:

  • Option 1 (5 3 2 1): This option incorrectly matches Filaria (B) with Muscle (3). Filaria primarily affects the lymphatic system, not muscles.
  • Option 3 (4 3 5 1): This option incorrectly matches Malaria (A) with Lymph node (4). Malaria primarily affects blood cells.
  • Option 4 (5 4 1 2): This option incorrectly matches Encephalitis (C) with Bone marrow (1) and Leukaemia (D) with Brain (2). Encephalitis affects the brain, and Leukaemia affects bone marrow.
SOURCENCERT Class 12 Biology Chapter 8: Human Health and Disease