Match Column I with Column II:
| Column I | Column II |
| A. Wuchereria bancrofti | 1. Amoebiasis |
| B. Plasmodium falciparum | 2. Pneumonia |
| C. Entamoeba histolytica | 3. Elephantiasis |
| D. Haemophilus influenzae | 4. Malignant malaria |
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-3,B-4,C-1,D-2
(A) Wuchereria bancrofti — this matches (3) Elephantiasis. This filarial worm lives in the lymphatic vessels of the lower limbs and causes slow, chronic swelling. Female mosquitoes spread it.
(B) Plasmodium falciparum — this matches (4) Malignant malaria. Of the Plasmodium species, it causes the most serious type of malaria, which can even be fatal. It spreads through the bite of the female Anopheles mosquito.
(C) Entamoeba histolytica — this matches (1) Amoebiasis. This protozoan lives in the large intestine and causes amoebic dysentery. Houseflies carry it from faeces to food.
(D) Haemophilus influenzae — this matches (2) Pneumonia. This bacterium, along with Streptococcus pneumoniae, infects the alveoli of the lungs, which fill with fluid and make breathing hard.
NCERT Extract:
Common Diseases in Humans – “… Bacteria like Streptococcus pneumoniae and Haemophilus influenzae are responsible for the disease pneumonia in humans which infects the alveoli (air filled sacs) of the lungs. … Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal. … Entamoeba histolytica is a protozoan parasite in the large intestine of human which causes amoebiasis (amoebic dysentery). … Wuchereria (W. bancrofti and W. malayi), the filarial worms cause a slowly developing chronic inflammation of the organs in which they live for many years, usually the lymphatic vessels of the lower limbs and the disease is called elephantiasis or filariasis (Figure 7.2).”