Helminths and Parasitic Disease Transmission—NEET Biology
📚 Practice ConceptAscaris, the common round worm and Wuchereria, the filarial worm, are some of the helminths which are known to be pathogenic to man. Ascaris, an intestinal parasite causes ascariasis. Symptoms of these disease include internal bleeding, muscular pain, fever, anemia and blockage of the intestinal passage. 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.
Which of the following statements regarding ascariasis are NOT correct? S1: Ascariasis is caused by Ascaris, which is a common flatworm. S2: Symptoms of this disease typically include internal bleeding, muscular pain, fever, anemia, and often blockage of the intestinal passage. S3: A healthy person primarily acquires this infection through the bite of an infected mosquito vector. S4: The eggs of the parasite are excreted along with the faeces of infected persons, contaminating soil, water, and plants. S5: Maintaining proper personal and public hygiene, especially concerning food and water, is crucial for preventing ascariasis.
View solution & NCERT explanation
Correct answer: A — S1 and S3 only
Let's evaluate each statement based on the NCERT text for Human Health and Disease: S1: "Ascaris, the common round worm..." The statement incorrectly identifies Ascaris as a flatworm; it is a roundworm. This statement is incorrect. S2: "Symptoms of these disease include internal bleeding, muscular pain, fever, anemia and blockage of the intestinal passage." This statement accurately lists the symptoms. This statement is correct. S3: "A healthy person acquires this infection through contaminated water, vegetables, fruits, etc." The statement incorrectly suggests mosquito bite transmission, which is not the case for ascariasis. This statement is incorrect. S4: "The eggs of the parasite are excreted along with the faeces of infected persons which contaminate soil, water, plants, etc." This statement is correct. S5: "Maintenance of personal and public hygiene is very important for prevention and control of many infectious diseases. These measures are particularly essential where the infectious agents are transmitted through food and water such as typhoid, amoebiasis and ascariasis." This statement is correct. We are looking for statements that are NOT correct. Therefore, S1 and S3 are the incorrect statements. Option A is correct because S1 and S3 are incorrect. Options B, C, and D are incorrect as they include correct statements or miss incorrect ones. The tested concept is the detailed understanding of ascariasis, including the classification of its causative agent, its symptoms, and its mode of transmission and prevention.
What does NCERT say about Ascaris common round worm?
Has this concept appeared in NEET?
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