Match List-I with List-II.
| List-I | List-II |
| A. Haemozoin | I. Carry the parasite of amoebiasis from the faeces of an infected person to food |
| B. Houseflies | II. Excreted with the faeces of infected persons and contaminate soil, water and plants |
| C. Heat and moisture | III. Chill and high fever recurring every three to four days |
| D. Eggs of Ascaris | IV. Help ringworm fungi grow in skin folds such as those in the groin |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-III, B-I, C-IV, D-II
(A) Haemozoin — this matches (III) Chill and high fever recurring every three to four days. In malaria the parasites burst the red blood cells. The rupture releases the toxic substance haemozoin, which causes the chill and fever.
(B) Houseflies — this matches (I) Carry the parasite of amoebiasis from the faeces of an infected person to food. Houseflies are mechanical carriers of Entamoeba histolytica; they do not let the parasite grow inside them.
(C) Heat and moisture — this matches (IV) Help ringworm fungi grow in skin folds such as those in the groin. The ringworm fungi (Microsporum, Trichophyton, Epidermophyton) thrive in warm, moist skin folds.
(D) Eggs of Ascaris — this matches (II) Excreted with the faeces of infected persons and contaminate soil, water and plants. A healthy person gets ascariasis through contaminated water, vegetables and fruits.
NCERT Extract:
Common Diseases in Humans – “… The rupture of RBCs is associated with release of a toxic substance, haemozoin, which is responsible for the chill and high fever recurring every three to four days.”
Common Diseases in Humans – “… Houseflies act as mechanical carriers and serve to transmit the parasite from faeces of infected person to food and food products, thereby contaminating them.”
Common Diseases in Humans – “… The eggs of the parasite are excreted along with the faeces of infected persons which contaminate soil, water, plants, etc. A healthy person acquires this infection through contaminated water, vegetables, fruits, etc.”
Common Diseases in Humans – “… These lesions are accompanied by intense itching. Heat and moisture help these fungi to grow, which makes them thrive in skin folds such as those in the groin or between the toes.”