Q.(i) Write the scientific name of the filarial worm that causes filariasis.

Helminthes are mostly endoparasitic worms in the human gut and blood, causing diseases collectively called helminthiasis. Ascariasis, caused by the roundworm Ascaris lumbricoides (a monogenic parasite with clear sexual dimorphism), spreads through ingestion of embryonated eggs in contaminated food/water or via hand-to-mouth transfer from contaminated soil (a particular risk for children). Symptoms include abdominal pain, vomiting, headache, anaemia, irritability and diarrhoea; heavy infections cause nutritional deficiency, stunted growth in children, and sometimes enteritis, hepatitis or bronchitis. …