Monogenea MCQs December 4, 2025September 30, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. What are Monogeneans commonly known as? (A) Flukes (B) Ectoparasites (C) Roundworms (D) Tapeworms 2. Monogenea belong to which phylum? (A) Nematoda (B) Platyhelminthes (C) Annelida (D) Arthropoda 3. What type of host do Monogeneans primarily infect? (A) Mammals (B) Birds (C) Reptiles (D) Fish 4. Which structure is primarily used by Monogeneans for attachment? (A) Proglottids (B) Hooks (C) Suckers (D) Tegument 5. Monogeneans are primarily found in which habitat? (A) Freshwater (B) All of the above (C) Terrestrial environments (D) Marine environments 6. What type of life cycle do Monogeneans exhibit? (A) Indirect life cycle (B) Direct life cycle (C) Complex life cycle (D) Simple life cycle 7. Monogeneans are characterized by which of the following? (A) A single host life cycle (B) A distinct head (C) A segmented body (D) A complex nervous system 8. Which structure is present in Monogeneans for locomotion? (A) Flagella (B) Cilia (C) Tentacles (D) Pseudopodia 9. Which of the following is a common genus of Monogenea? (A) Taenia (B) Gyrodactylus (C) Diphyllobothrium (D) Schistosoma 10. What is the primary reproductive method of Monogeneans? (A) Sexual reproduction (B) Binary fission (C) Asexual reproduction (D) Budding 11. The eggs of Monogeneans develop into which larval stage? (A) Miracidium (B) Cercaria (C) Oncomiracidium (D) Metacercaria 12. What is the function of the haptor in Monogeneans? (A) Feeding (B) Reproduction (C) Attachment (D) Locomotion 13. Which hosts can Monogeneans infect? (A) Only fish (B) Fish and amphibians (C) Fish and reptiles (D) Fish, amphibians, and reptiles 14. Monogeneans primarily infest which part of their host? (A) Internal organs (B) Muscles (C) Intestines (D) Skin and gills 15. Which of the following is NOT a characteristic of Monogenea? (A) Free-living adults (B) Direct life cycle (C) Ectoparasitic lifestyle (D) Simple body structure 16. The haptor of Monogeneans is equipped with which structures? (A) Suckers and hooks (B) Sensory cells (C) Gills (D) Tentacles 17. Monogeneans are primarily classified based on their: (A) Habitat (B) Host specificity (C) Morphology (D) Feeding behavior 18. Which Monogenean species affects fish significantly? (A) Clonorchis sinensis (B) Fasciola hepatica (C) Gyrodactylus salaris (D) Schistosoma japonicum 19. How do Monogeneans obtain nutrients? (A) Ingestion of host tissues (B) Absorption through the skin (C) Photosynthesis (D) Filter feeding 20. Monogeneans are mostly found in which organisms? (A) Terrestrial vertebrates (B) None of the above (C) Invertebrates (D) Aquatic vertebrates 21. Which Monogenean genus causes gill disease in fish? (A) Diplozoon (B) Echinostoma (C) Dactylogyrus (D) Fasciola 22. Which feature is unique to Monogenea? (A) Their larval stage (B) Their reproductive strategy (C) Their attachment structures (D) Their body plan 23. The adult Monogenean typically lives for how long? (A) A few days (B) Several months (C) Several weeks (D) Years 24. What type of body plan do Monogeneans exhibit? (A) Cylindrical (B) Flat and ribbon-like (C) Segmented (D) Spherical 25. The eggs of Monogeneans are: (A) Soft and unprotected (B) Spiny and heavy (C) Jelly-like (D) Hard-shelled and protected 26. Which genus shows high host specificity? (A) Both A and C (B) Diplozoon (C) Dactylogyrus (D) Gyrodactylus 27. What is the primary function of reproductive structures in Monogeneans? (A) Nutrient absorption (B) Attachment (C) Fertilization and egg production (D) Locomotion 28. Monogeneans primarily infect which part of fish? (A) Heart (B) Liver (C) Intestines (D) Gills 29. The larval form that attaches to fish is called: (A) Metacercaria (B) Miracidium (C) Cercaria (D) Oncomiracidium 30. What is a major impact of Monogeneans on their host? (A) Providing nutrients (B) Causing disease (C) Enhancing growth (D) Reducing predation