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