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': 'Flame cells are found in? \nSelect and explain. \nA. Excretory poion of trematodes, B. Excretory poion of nematodes, C. Excretory poion of amoeba, D. Excretory poion of protozoa', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Morphology of a hermaphroditic trematode: 1. Oral sucker 2. Pharynx 3. Genital pore 4. Ventral sucker 5. Uterus 6. Caecum 7. Cirrus 8. Ovary 9. Flame cell 10. Testis 11. Excretory bladder TEXTBOOK OF MEDICAL PARASITOLOGY,CKJ PANIKER,6TH EDITION,PAGE NO117', 'role': 'assistant'}]