Trematoda MCQs December 4, 2025September 30, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. What are Trematodes commonly known as? (A) Roundworms (B) Flatworms (C) Flukes (D) Leeches 2. What type of body symmetry do Trematodes exhibit? (A) Radial symmetry (B) Bilateral symmetry (C) Asymmetry (D) Spherical symmetry 3. Trematodes are primarily known for being: (A) Free-living (B) Decomposers (C) Photosynthetic (D) Parasitic 4. Which of the following is a characteristic feature of Trematodes? (A) A hard outer shell (B) A segmented body (C) Jointed appendages (D) Suckers for attachment 5. What type of life cycle do most Trematodes have? (A) Indirect life cycle (B) Direct life cycle (C) Complex life cycle (D) Both A and B 6. Trematodes primarily infect which type of host? (A) Primary host (B) Both primary and intermediate hosts (C) Intermediate host (D) None of the above 7. Which organ is primarily used by Trematodes for attachment to their host? (A) Mouth (B) Sucker (C) Gills (D) Tentacles 8. The larvae of Trematodes are often referred to as: (A) Cysts (B) Zygotes (C) Proglottids (D) Metacercariae 9. Which of the following is a common disease caused by Trematodes? (A) Malaria (B) Schistosomiasis (C) Ascariasis (D) Giardiasis 10. Trematodes belong to which phylum? (A) Nematoda (B) Annelida (C) Platyhelminthes (D) Arthropoda 11. What is the primary host for the blood fluke Schistosoma? (A) Snails (B) Fish (C) Humans (D) Cattle 12. Trematodes reproduce primarily through: (A) Budding (B) Binary fission (C) Sexual reproduction (D) Asexual reproduction 13. Which of the following structures is NOT found in Trematodes? (A) Suckers (B) Scolex (C) Tegument (D) Proglottids 14. What is the main purpose of the tegument in Trematodes? (A) Protection against the host’s immune system (B) Locomotion (C) Digestion (D) Reproduction 15. Trematodes are typically found in: (A) Freshwater environments (B) Marine environments (C) Terrestrial environments (D) All of the above 16. Which class of Trematodes is known to infect the liver of their hosts? (A) Monogenea (B) Turbellaria (C) Cestoda (D) Digenea 17. The larvae of which Trematode stage can penetrate the skin of the host? (A) Metacercaria (B) Cercaria (C) Miracidium (D) Adult 18. Trematodes that parasitize fish are commonly referred to as: (A) Liver flukes (B) Fish flukes (C) Blood flukes (D) Intestinal flukes 19. Which of the following Trematodes is known for causing liver damage? (A) Fasciola hepatica (B) Both A and B (C) Schistosoma mansoni (D) Clonorchis sinensis 20. How do Trematodes typically obtain nutrients? (A) Photosynthesis (B) Filtration (C) Ingestion through a mouth (D) Absorption through the skin 21. Which life stage of Trematodes is free-swimming? (A) Egg (B) Cercaria (C) Metacercaria (D) Adult 22. The term "digenetic" in Trematodes refers to: (A) Two hosts involved in the life cycle (B) A single host (C) Asexual reproduction (D) Parasitism 23. What is the primary method of transmission for Trematodes to their definitive host? (A) Airborne transmission (B) Direct contact (C) Ingestion of contaminated food or water (D) Blood transfusion 24. Which of the following is NOT a characteristic of Trematodes? (A) Body flattened dorsoventrally (B) Complex life cycles (C) Lack of respiratory and circulatory systems (D) Presence of a coelom 25. The intermediate host for many Trematodes is typically: (A) Fish (B) Snails (C) Amphibians (D) Mammals 26. What is the primary form of respiration in Trematodes? (A) Skin diffusion (B) Gills (C) Lungs (D) Trachea 27. Which of the following is a method of control for Trematode infections? (A) Vaccination (B) Both B and C (C) Antiparasitic drugs (D) Improved sanitation 28. Trematodes are primarily found in which environments? (A) Aquatic (B) Terrestrial (C) Both aquatic and terrestrial (D) Aerial 29. The adult stage of Trematodes typically resides in the: (A) Bloodstream (B) All of the above (C) Liver (D) Intestines 30. The reproductive structure in Trematodes is usually located in which part of the body? (A) Anterior end (B) Posterior end (C) Midbody (D) Throughout the body