Neoechinorhynchida MCQs December 4, 2025September 28, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. Neoechinorhynchida belong to which phylum? (A) Acanthocephala (B) Mollusca (C) Annelida (D) Nematoda 2. The body of Neoechinorhynchida is primarily characterized by: (A) Segmentation (B) Acoelomate structure (C) A distinct head region (D) Presence of spines on the proboscis 3. The typical habitat of Neoechinorhynchida includes: (A) Freshwater environments (B) Marine environments (C) All of the above (D) Terrestrial environments 4. Neoechinorhynchida are primarily: (A) Herbivores (B) Carnivores (C) Parasitic (D) Decomposers 5. The larval stage of Neoechinorhynchida is known as: (A) Miracidium (B) Cystacanth (C) Trochophore (D) Metacestode 6. Neoechinorhynchida typically inhabit which type of host? (A) Terrestrial mammals (B) Aquatic invertebrates (C) Birds (D) Fish 7. The primary mode of attachment for Neoechinorhynchida is through their: (A) Proboscis (B) Hooks (C) Tentacles (D) Setae 8. Neoechinorhynchida are known to have a life cycle that includes: (A) Multiple hosts (B) Direct development (C) A single host (D) Asexual reproduction 9. The reproductive strategy of Neoechinorhynchida involves: (A) Budding (B) Sexual reproduction (C) Parthenogenesis (D) Fragmentation 10. The primary structure used for feeding in Neoechinorhynchida is: (A) Mouth (B) Proboscis (C) Gills (D) Siphon 11. Neoechinorhynchida have a body plan that is generally: (A) Segmented (B) Flat (C) Cylindrical with segments (D) Unsegmented 12. The eggs of Neoechinorhynchida are typically released into: (A) Water (B) Soil (C) Air (D) Host tissues 13. The life cycle of Neoechinorhynchida can involve: (A) Simple binary fission (B) Direct development without larval forms (C) Rapid maturation (D) Intermediate hosts 14. Neoechinorhynchida are often found in which type of ecological system? (A) All of the above (B) Marine systems (C) Estuarine systems (D) Freshwater systems 15. The primary ecological role of Neoechinorhynchida is as: (A) Parasites (B) Primary producers (C) Decomposers (D) Herbivores 16. Neoechinorhynchida are classified as: (A) Unicellular organisms (B) Prokaryotes (C) Multicellular organisms (D) Eukaryotes 17. The distinguishing feature of Neoechinorhynchida is the presence of: (A) Exoskeleton (B) Chitinous cuticle (C) Hooks on the proboscis (D) Gills for respiration 18. Neoechinorhynchida can negatively impact their hosts by: (A) Competing for nutrients (B) Transmitting diseases (C) Causing physical damage (D) All of the above 19. The body wall of Neoechinorhynchida is characterized by: (A) Soft gelatinous tissue (B) Multiple layers of muscle (C) Chitinous plates (D) A tough outer layer 20. Neoechinorhynchida are often used in research to study: (A) All of the above (B) Evolutionary biology (C) Environmental changes (D) Host-parasite interactions 21. The evolutionary significance of Neoechinorhynchida lies in their: (A) Complex life cycles (B) Unique reproductive strategies (C) Diverse habitats (D) Simple body structure 22. Neoechinorhynchida exhibit a feeding strategy that is: (A) Filter feeding (B) Predatory (C) Parasitic (D) Herbivorous 23. The primary component of Neoechinorhynchida's diet comes from: (A) Algae (B) Microorganisms (C) Organic detritus (D) Host tissues 24. The main advantage of a parasitic lifestyle for Neoechinorhynchida is: (A) Increased mobility (B) Reduced competition (C) Access to abundant food (D) Greater reproductive success 25. Neoechinorhynchida have evolved to: (A) Become free-living organisms (B) Adapt to various hosts (C) Rely solely on detritus for nutrition (D) Live exclusively in freshwater 26. The presence of spines on the proboscis helps Neoechinorhynchida to: (A) Swim effectively (B) Anchor themselves to the host (C) Capture prey (D) Absorb nutrients 27. Neoechinorhynchida can be found in: (A) Coastal waters (B) Deep-sea environments (C) All types of aquatic environments (D) Rivers and lakes 28. The research on Neoechinorhynchida contributes to our understanding of: (A) Evolutionary relationships (B) Host immune responses (C) Environmental stressors (D) All of the above 29. Neoechinorhynchida's proboscis structure is important for: (A) Locomotion (B) Attachment and feeding (C) Gas exchange (D) Sensory perception 30. Neoechinorhynchida have been studied for their role in: (A) Aquaculture (B) All of the above (C) Biodiversity assessments (D) Disease ecology