Biology 2008 JAMB Past Questions - Question 38: A boy who is fond of swimming in a pond finds himself passing urine with traces of blood. He is likely to have contracted

Correct Answer

A

Explanation

A- it is caused by a long parasitic flatworm called schistosoma man becomes infected when he drinks or bathes with contaminated water such as lakes, ponds etc. Cercarial whichis an infective stage of man penetrates the skin and settles in his urinary.bladder or intestine where it develops into the flatworm and feeds. Traces ofblood may be seen in the urine.Salmonellosisis a disease caused by bacterium called salmonella. One contacts it by drinking or eating contaminated water or food respectively. Onchocerciasis or river blindness is a disease caused by a filarial worm called on chocerca. It is transmitted by a black fly called simulium. Poliomyelitis is a viral disease transmitted through droplet infection during coughing and sneezing of infected person or eating contaminated food.