In the life history of Schistosoma (Bilharzia), one of the following is the intermediate host...

Explanation

Schistosoma, also known as Bilharzia, is a type of parasite that causes a disease called schistosomiasis. In the life history of Schistosoma, there are two hosts involved: the definitive host and the intermediate host. The definitive host is usually a mammal like a human, while the intermediate host is usually a snail. The intermediate host is important because that is where the parasite undergoes asexual reproduction and develops into a stage that can infect the definitive host. In this case, the correct answer to the question is Option B: Snail. This is because the snail is the intermediate host in the life history of Schistosoma. Once the parasite has developed in the snail, it is released into the water where it can infect the definitive host, which is usually a human. To prevent schistosomiasis, it is important to avoid contact with contaminated freshwater sources where the snails may be living. This can be achieved by practicing good hygiene and avoiding activities like swimming or bathing in freshwater sources that may be contaminated with the parasite. To learn more about schistosomiasis and the life history of Schistosoma, please refer to the relevant sections in your Biology textbook.