Scaphopoda MCQs

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

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