This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology, Subject name: Microbiology
[{'content': 'Operculated eggs are seen in - \nSelect and explain. \nA. Nematodes, B. Cestodes, C. Tremalodes, D. Protozoa', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Trematodes o Operculated eggs has a little cap like structure (operculum) at the end. The operculum pops open when the next stage is ready to emerge.o The trematodes (flukes) lay operculated eggs. An exception is schistosome egg, which are not operculated.", 'role': 'assistant'}]