Match List-I (Diseases) with List-II (Factors) and select the correct answer using the code given below:
List-I (Diseases): (A) Peptic ulcers (B) Dengue (C) Elephant Foot (D) Malaria
List-II (Facto

Question

Match List-I (Diseases) with List-II (Factors) and select the correct answer using the code given below:
List-I (Diseases): (A) Peptic ulcers  (B) Dengue  (C) Elephant Foot  (D) Malaria
List-II (Factors): (1) Virus  (2) Protozoa  (3) Worm  (4) Bacteria

UnlockIAS · Accepted Answer

Correct — B, A-(4), B-(1), C-(3), D-(2). Peptic ulcers are caused chiefly by the bacterium Helicobacter pylori (4); Dengue by the dengue virus, a flavivirus (1); 'Elephant Foot' (elephantiasis / lymphatic filariasis) by parasitic filarial worms such as Wuchereria bancrofti (3); and Malaria by the Plasmodium protozoan (2). Only option B pairs every disease with the right class of pathogen.

Why the other options are wrong — (a) Wrongly makes peptic ulcers protozoan, dengue a worm, elephantiasis bacterial and malaria viral — none of these match; malaria in particular is protozoan, not viral.  (c) Gets peptic ulcers (bacteria) and elephantiasis (worm) right, but calls dengue protozoan (it is viral) and malaria viral (it is protozoan) — the classic dengue/malaria swap.  (d) Mislabels peptic ulcers as a worm and dengue as bacterial, and makes elephantiasis protozoan and malaria viral — every pair is displaced.

Concept: Human diseases are grouped by their causative agent: bacteria (peptic ulcer's H. pylori, tuberculosis, cholera), viruses (dengue, influenza, polio), protozoa (malaria's Plasmodium, amoebiasis, kala-azar) and helminth worms (filariasis/elephantiasis, ascariasis). Knowing the agent class explains how a disease spreads and how it is treated — antibiotics work on bacteria but not on viruses or protozoa.

State PCS 2023 Q46 — Science & Technology PYQ with Answer

State PCS 2023 Q46 — Science & Technology PYQ with Answer