Chromadorea MCQs December 4, 2025September 30, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. Which of the following is a characteristic feature of Chromadorea nematodes? (A) Amphids with circular openings (B) Presence of a pharyngeal bulb (C) Lack of a cuticle (D) Smooth body surface 2. What type of habitat do most Chromadorea nematodes inhabit? (A) Terrestrial (B) Both A and B (C) Aquatic (D) Airborne 3. Which of the following is a representative genus of the Chromadorea class? (A) Caenorhabditis (B) Trichuris (C) Ascaris (D) Strongyloides 4. Chromadorea nematodes are primarily known for their: (A) Free-living lifestyle (B) Parasitic lifestyle (C) Both A and B (D) Symbiotic relationships 5. Which of the following is a well-known parasitic Chromadorea nematode that infects humans? (A) Hookworm (B) Dirofilaria (C) Enterobius (D) Trichuris 6. Chromadorea nematodes exhibit what type of body symmetry? (A) Radial symmetry (B) Bilateral symmetry (C) Asymmetrical (D) Pentaradial symmetry 7. The body of Chromadorea nematodes is typically: (A) Segmented (B) Cylindrical and non-segmented (C) Flat (D) Leaf-like 8. The cuticle of Chromadorea nematodes is primarily composed of: (A) Collagen (B) Chitin (C) Keratin (D) Cellulose 9. What is the reproductive strategy of most Chromadorea nematodes? (A) Asexual reproduction (B) Fragmentation (C) Budding (D) Sexual reproduction 10. Which of the following is NOT a characteristic of Chromadorea nematodes? (A) Well-developed amphids (B) Segmented body (C) Presence of a pharyngeal bulb (D) Smooth, annulated cuticle 11. The amphids in Chromadorea nematodes are generally: (A) Spiral or circular (B) Elongated (C) Absent (D) Simple slits 12. Which of the following diseases is caused by a Chromadorea nematode? (A) Schistosomiasis (B) Filariasis (C) Lymphatic filariasis (D) Malaria 13. The life cycle of Chromadorea nematodes usually includes: (A) Multiple larval stages (B) Direct development (C) Indirect development (D) Parasitic stages only 14. Which of the following Chromadorea nematodes is known to cause intestinal infections in humans? (A) Trichuris trichiura (B) Strongyloides stercoralis (C) Enterobius vermicularis (D) Ascaris lumbricoides 15. What is a common method of transmission for Chromadorea parasites? (A) Ingestion of eggs (B) Airborne spores (C) Direct contact (D) Through vectors 16. Which structure is primarily used for feeding in Chromadorea nematodes? (A) Amphids (B) Pharynx (C) Cloaca (D) Anus 17. Which of the following is a significant agricultural pest from the Chromadorea class? (A) Meloidogyne (B) Ascaris (C) Enterobius (D) Dirofilaria 18. Chromadorea nematodes are known for their ability to: (A) Regenerate lost body parts (B) Produce toxins (C) Change colors (D) Survive extreme environmental conditions 19. Which group of Chromadorea nematodes is primarily found in soil? (A) Both A and B (B) Tylenchida (C) Rhabditida (D) None of the above 20. The body of Chromadorea nematodes is typically: (A) Flat and ribbon-like (B) Cylindrical and tapered (C) Round and elongated (D) Thick and globular 21. What is the primary diet of free-living Chromadorea nematodes? (A) All of the above (B) Algae (C) Organic matter (D) Bacteria 22. Which of the following genera is NOT part of Chromadorea? (A) Caenorhabditis (B) Trichinella (C) Rhabditis (D) Meloidogyne 23. Chromadorea nematodes can be distinguished from other classes by their: (A) Thick cuticle (B) Pharyngeal bulb (C) Smooth body surface (D) Both A and B 24. In Chromadorea nematodes, the males are usually: (A) Larger than females (B) Same size as females (C) Smaller than females (D) Always hermaphroditic 25. What is the primary function of the cuticle in Chromadorea nematodes? (A) Movement (B) Protection (C) Respiration (D) Digestion 26. Which of the following nematodes is primarily found in the intestines of mammals? (A) Ascaris (B) Strongyloides (C) Caenorhabditis (D) Rhabditis 27. The eggs of Chromadorea nematodes are typically: (A) Large and spherical (B) Oval and smooth (C) Small and elongated (D) Irregular and flat 28. Chromadorea nematodes are commonly studied in laboratories due to their: (A) Simple body structure (B) Both A and B (C) Fast reproductive rate (D) Their role in human health 29. What is the primary sensory structure in Chromadorea nematodes? (A) Pharynx (B) Amphids (C) Cloaca (D) Anus 30. Which class do Chromadorea nematodes belong to within the phylum Nematoda? (A) Enoplea (B) Secernentea (C) Chromadorea (D) Spiruria