Monhysterida MCQs December 4, 2025September 30, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. What is the primary habitat of Monhysterida nematodes? (A) Freshwater (B) Marine environments (C) Terrestrial soil (D) Airborne 2. Monhysterida nematodes are primarily characterized by their: (A) Long bodies (B) Thick cuticle (C) Reduced body size (D) Anterior amphids 3. Which of the following is a notable feature of Monhysterida nematodes? (A) Well-developed pharynx (B) Spiny cuticle (C) Simple body shape (D) Presence of a stylet 4. The diet of Monhysterida nematodes typically includes: (A) Fungi and bacteria (B) Algae (C) Detritus (D) Plant roots 5. Which structure is often used for sensory perception in Monhysterida nematodes? (A) Amphids (B) Claspers (C) Setae (D) Pharyngeal bulb 6. Monhysterida nematodes are known to have a body shape that is: (A) Flattened (B) Irregular (C) Cylindrical (D) Disk-shaped 7. Which of the following genera is classified under the order Monhysterida? (A) Caenorhabditis (B) Rhabditis (C) Monhystera (D) Heterodera 8. What is the significance of Monhysterida nematodes in sediment ecosystems? (A) They are top predators (B) They filter sediments (C) They are parasitic on fish (D) They contribute to nutrient cycling 9. The reproduction of Monhysterida nematodes is typically: (A) Asexual (B) Sexual (C) Parthenogenetic (D) Budding 10. Which feature of Monhysterida nematodes aids in their identification? (A) Smooth cuticle (B) Presence of annulations (C) Coloration (D) Size 11. Monhysterida nematodes can be classified as: (A) Ectoparasites (B) Free-living (C) Endoparasites (D) Symbiotic 12. Which of the following is NOT a characteristic of Monhysterida nematodes? (A) Segmented body (B) Thick cuticle (C) Setae on the body (D) Elongated bodies 13. Which of the following reproductive strategies is observed in Monhysterida nematodes? (A) Synchronous spawning (B) Internal fertilization (C) External fertilization (D) Asexual budding 14. Monhysterida nematodes are important in which ecological role? (A) Decomposers (B) Predators (C) Herbivores (D) Parasitic hosts 15. The life cycle of Monhysterida nematodes typically includes: (A) Complex interactions with host organisms (B) Direct development without a larval stage (C) Multiple larval stages (D) Parthenogenetic reproduction 16. Which of the following statements about Monhysterida nematodes is true? (A) They have a simple body structure (B) They play a role in sediment health (C) They are primarily freshwater (D) They are parasites of humans 17. What is the typical size range for Monhysterida nematodes? (A) Over 20 mm (B) 1 to 10 mm (C) 10 to 20 mm (D) 0.1 to 1 mm 18. Which of the following adaptations helps Monhysterida nematodes in their environment? (A) Ability to swim (B) High metabolic rate (C) Coloration for camouflage (D) Thick cuticle for protection 19. The amphids in Monhysterida nematodes are primarily used for: (A) Sensory functions (B) Locomotion (C) Feeding (D) Reproduction 20. Which of the following factors influences the distribution of Monhysterida nematodes? (A) All of the above (B) Soil moisture (C) Organic matter availability (D) Temperature 21. The presence of Monhysterida nematodes in sediment is often an indicator of: (A) High salinity (B) Poor sediment structure (C) Pollution levels (D) Healthy ecosystem 22. Which of the following best describes the ecological role of Monhysterida in sediment ecosystems? (A) They are top predators (B) They are important decomposers (C) They are primary producers (D) They are symbionts of algae 23. The ability of Monhysterida nematodes to survive in harsh environments is attributed to their: (A) High reproductive rate (B) Small size (C) Thick cuticle (D) Symbiotic relationships 24. Which of the following adaptations aids in the feeding of Monhysterida nematodes? (A) Highly developed eyes (B) Presence of a stylet (C) Siphoning mechanism (D) Large mouth 25. Monhysterida nematodes are significant in sediment health because they: (A) Break down organic matter (B) Compete with bacteria for nutrients (C) Filter sediments (D) Prey on larger nematodes 26. Which of the following is a common method for studying Monhysterida nematodes? (A) All of the above (B) Genetic sequencing (C) Environmental sampling (D) Microscopy 27. The primary mode of locomotion for Monhysterida nematodes is: (A) Burrowing (B) Crawling (C) Swimming (D) Floating 28. Which of the following statements about Monhysterida nematodes is true? (A) They have a short life cycle (B) They play a role in nutrient cycling (C) They are primarily herbivorous (D) They are exclusively marine 29. Monhysterida nematodes are most commonly studied in relation to: (A) Aquaculture (B) Marine ecology (C) Soil health (D) Parasitology 30. Which of the following statements about Monhysterida nematodes is true? (A) They are host-specific parasites (B) They are primarily detritivores (C) They have complex life cycles (D) They are not found in sediments