Phylum Nematomorpha MCQs December 5, 2025September 28, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. Nematomorpha is commonly known as what type of organism? (A) Flatworms (B) Segmented worms (C) Roundworms (D) Horsehair worms 2. What type of body symmetry do nematomorphs exhibit? (A) Asymmetry (B) Radial symmetry (C) Bilateral symmetry (D) None of the above 3. Nematomorphs primarily inhabit which type of environment? (A) Terrestrial (B) All of the above (C) Parasitic in hosts (D) Aquatic 4. Which life stage is typically free-living in nematomorphs? (A) Egg (B) Adult (C) Larval (D) Juvenile 5. Nematomorphs are known to have a body that is: (A) Segmented (B) Smooth and cylindrical (C) Flat and leaf-like (D) Jointed 6. The larval stage of nematomorphs typically parasitizes which type of organism? (A) Fish (B) Insects (C) Mammals (D) Birds 7. Which of the following is a characteristic feature of nematomorphs? (A) Lack of body segmentation (B) Pseudocoelom (C) True coelom (D) Presence of setae 8. Nematomorphs are primarily known for their role as: (A) Decomposers (B) Parasites (C) Predators (D) Primary producers 9. What is the primary mode of reproduction in nematomorphs? (A) Asexual reproduction (B) Fragmentation (C) Budding (D) Sexual reproduction 10. Which of the following structures is absent in nematomorphs? (A) Digestive system (B) Nervous system (C) Circulatory system (D) Excretory system 11. Adult nematomorphs typically feed on: (A) Algae (B) Detritus (C) They do not feed (D) Small aquatic animals 12. Nematomorphs are part of which phylum? (A) Nematoda (B) Nematomorpha (C) Annelida (D) Platyhelminthes 13. The body of a nematomorph is covered by: (A) A chitinous cuticle (B) A soft epidermis (C) Scales (D) A hard shell 14. Which of the following is a common host for nematomorph larvae? (A) Earthworms (B) Snails (C) Beetles (D) Spiders 15. Nematomorphs typically reproduce in: (A) All of the above (B) Saltwater (C) Terrestrial environments (D) Freshwater 16. What is the main ecological role of adult nematomorphs? (A) Parasites of other animals (B) All of the above (C) Prey for other animals (D) Contributing to nutrient cycling 17. Which of the following nematomorphs is known to cause behavioral changes in their hosts? (A) Enterobius species (B) Ascaris species (C) Trichinella species (D) Gordius species 18. The larval stage of nematomorphs is known to: (A) Live independently (B) Have a complete digestive system (C) Feed on the host's blood (D) Inhabit the host's body 19. The term "gordian worm" refers specifically to: (A) Annelids (B) Nematomorphs (C) Nematodes (D) Cnidarians 20. In which year was the phylum Nematomorpha established? (A) 1758 (B) 1817 (C) 1902 (D) 1848 21. Nematomorphs typically undergo which type of development? (A) Direct development (B) Metamorphosis (C) Indirect development (D) Parasitic development 22. The primary form of locomotion in nematomorphs is: (A) Floating (B) Crawling (C) Swimming (D) Burrowing 23. What happens to nematomorphs when they mature in their host? (A) They become dormant (B) They change hosts (C) They die within the host (D) They grow and exit the host 24. What is a unique reproductive feature of nematomorphs? (A) They have multiple mating strategies (B) They can reproduce asexually (C) They are hermaphrodites (D) They do not reproduce 25. Which of the following statements about nematomorphs is true? (A) They have a closed circulatory system (B) They are exclusively marine organisms (C) They possess a complex nervous system (D) They are not true parasites 26. The body length of nematomorphs can reach up to: (A) 1 cm (B) 1 meter (C) 50 cm (D) 10 cm 27. Which structure do nematomorphs use for locomotion? (A) Setae (B) Muscles (C) Cilia (D) Tentacles 28. What is the primary diet of nematomorph larvae? (A) Plant matter (B) Other small invertebrates (C) Detritus (D) Blood of the host 29. In adult nematomorphs, the reproductive organs are located: (A) Posteriorly (B) Anteriorly (C) Along the sides (D) Distributed evenly throughout the body 30. The classification of nematomorphs places them in which kingdom? (A) Animalia (B) Fungi (C) Plantae (D) Protista