You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All of the following have operculated eggs except: and explain in detail?
Operculated eggs are those eggs which have a lid or operculum.Operculated eggs are present in-1. Most of the Trematodes (except Schistosomes)2. Diphyllobothrium latum (Fish tapeworm)Diphyllobothrium latum causes Megaloblastic anemia.Eggs of H. dimunita (Rat tapeworm) lacks polar filaments. Clonorchis sinensi (Oriental Liver fluke) causes Cholangiocarcinoma.