Scaphopoda MCQs December 4, 2025September 30, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. What is the common name for members of the class Scaphopoda? (A) Tusk shells (B) Clams (C) Chitons (D) Sea slugs 2. What unique shape do Scaphopoda shells typically have? (A) Spiral (B) Conical (C) Flat (D) Oval 3. What type of habitat do Scaphopoda primarily inhabit? (A) Freshwater (B) Marine (C) Terrestrial (D) Brackish water 4. Scaphopods primarily feed on which type of organism? (A) Detritus (B) Plants (C) Small fish (D) Other mollusks 5. What structure do Scaphopoda use for feeding? (A) Siphon (B) Tentacles (C) Radula (D) Gills 6. Which of the following is a key characteristic of Scaphopoda? (A) Presence of gills (B) Presence of a coiled shell (C) Presence of a tubular shell (D) Lack of a true shell 7. How do Scaphopoda respire? (A) Using their foot (B) Using gills (C) Through a specialized respiratory structure (D) Through their skin 8. What is the primary mode of locomotion for Scaphopoda? (A) Swimming (B) Crawling (C) Burrowing (D) Floating 9. What do Scaphopods use to anchor themselves in the sediment? (A) Their shell (B) Their tentacles (C) Their foot (D) Their siphon 10. Which of the following is a common genus of Scaphopoda? (A) Mytilus (B) Acanthochitona (C) Dentalium (D) Nautilus 11. What is the main ecological role of Scaphopoda? (A) Predators (B) Herbivores (C) Decomposers (D) Parasites 12. Which structure is primarily used for excretion in Scaphopoda? (A) Mantle (B) Gills (C) Nephridia (D) Foot 13. How do Scaphopoda reproduce? (A) Sexual reproduction (B) Asexual reproduction (C) Budding (D) Fragmentation 14. What feature distinguishes Scaphopoda from other mollusks? (A) A hard shell (B) A soft body (C) A tubular shell open at both ends (D) A coiled shell 15. Scaphopods are primarily found in which part of the ocean? (A) Intertidal zone (B) Coastal waters (C) Deep sea (D) Pelagic zone 16. What is the primary diet of Scaphopoda? (A) Coral (B) Algae (C) Detritus and microorganisms (D) Plankton 17. Which of the following is a potential predator of Scaphopoda? (A) All of the above (B) Crabs (C) Fish (D) Sea stars 18. What is the reproductive strategy of many Scaphopoda? (A) Internal fertilization (B) External fertilization (C) Asexual reproduction (D) Budding 19. Scaphopods lack which feature found in most other mollusks? (A) A foot (B) Gills (C) A radula (D) A shell 20. What type of symmetry do Scaphopoda exhibit? (A) Bilateral symmetry (B) Radial symmetry (C) Asymmetry (D) None of the above 21. The shell of Scaphopoda is primarily composed of what material? (A) Silica (B) Chitin (C) Calcium carbonate (D) Keratin 22. What is the function of the siphon in Scaphopoda? (A) Digestion (B) Respiration (C) Excretion (D) Feeding 23. Which of the following adaptations helps Scaphopoda survive in their environment? (A) Camouflage (B) Burrowing ability (C) Ability to swim (D) High reproductive rate 24. The larval stage of Scaphopoda is called: (A) Trochophore (B) Veliger (C) Nauplius (D) Zoea 25. Scaphopods are primarily classified under which phylum? (A) Arthropoda (B) Annelida (C) Mollusca (D) Echinodermata 26. Which of the following characteristics is common among Scaphopoda? (A) They have a closed circulatory system (B) They possess a radula (C) They have complex eyes (D) They are terrestrial 27. What is the size range for most Scaphopoda species? (A) 20-30 cm (B) 5-10 cm (C) 10-20 cm (D) 1-5 cm 28. Scaphopods are generally characterized by having: (A) A spiral shell (B) No shell (C) A linear, tubular shell (D) A segmented body 29. The ecological role of Scaphopoda includes: (A) Predation (B) Herbivory (C) Nutrient cycling (D) Parasitism 30. Which of the following adaptations helps Scaphopoda in their detritivorous feeding? (A) Long tentacles (B) A complex digestive system (C) A wide mouth (D) A radula with scraping capabilities