Gastropoda MCQs

  • Which of the following is the largest class within the phylum Mollusca?
    • A) Bivalvia
    • B) Cephalopoda
    • C) Gastropoda
    • D) Polyplacophora
      Answer: C) Gastropoda
  • Gastropods are characterized by which of the following features?
    • A) Two shells
    • B) Single, usually spiraled shell
    • C) Lack of shell
    • D) Radula
      Answer: B) Single, usually spiraled shell
  • What type of symmetry do adult gastropods typically exhibit?
    • A) Bilateral symmetry
    • B) Radial symmetry
    • C) Asymmetry
    • D) None of the above
      Answer: C) Asymmetry
  • The process of torsion in gastropods results in:
    • A) A bilateral body plan
    • B) A twisting of the body
    • C) Loss of the shell
    • D) Development of a foot
      Answer: B) A twisting of the body
  • What is the primary feeding structure in gastropods?
    • A) Jaws
    • B) Radula
    • C) Tentacles
    • D) Beak
      Answer: B) Radula
  • Which of the following is NOT a common habitat for gastropods?
    • A) Marine
    • B) Freshwater
    • C) Terrestrial
    • D) Aerial
      Answer: D) Aerial
  • Which of the following is a well-known marine gastropod?
    • A) Clam
    • B) Snail
    • C) Squid
    • D) Oysters
      Answer: B) Snail
  • Some gastropods, like cone snails, possess which type of specialized structure?
    • A) Venomous radula
    • B) Chromatophores
    • C) Filter-feeding gills
    • D) Foot
      Answer: A) Venomous radula
  • What is the primary mode of locomotion for gastropods?
    • A) Jet propulsion
    • B) Crawling using the foot
    • C) Swimming
    • D) Burrowing
      Answer: B) Crawling using the foot
  • Which of the following is a notable characteristic of the class Gastropoda?
    • A) Segmentation
    • B) A hard exoskeleton
    • C) Spiral shell development
    • D) Jointed appendages
      Answer: C) Spiral shell development
  • Which gastropod is known for its bright colors and toxicity?
    • A) Slug
    • B) Nudibranch
    • C) Apple snail
    • D) Garden snail
      Answer: B) Nudibranch
  • What is the primary reproductive strategy of most gastropods?
    • A) Asexual reproduction
    • B) Sexual reproduction
    • C) Budding
    • D) Fragmentation
      Answer: B) Sexual reproduction
  • The term “operculum” refers to:
    • A) The gill structure
    • B) A protective cover for the shell opening
    • C) The feeding organ
    • D) The eye stalks
      Answer: B) A protective cover for the shell opening
  • Which of the following adaptations helps aquatic gastropods breathe underwater?
    • A) Gills
    • B) Lungs
    • C) Skin respiration
    • D) Spiracles
      Answer: A) Gills
  • What is the primary diet of most gastropods?
    • A) Detritus
    • B) Algae and plant material
    • C) Other mollusks
    • D) Microorganisms
      Answer: B) Algae and plant material
  • The body of gastropods is divided into which three main parts?
    • A) Head, foot, and shell
    • B) Head, mantle, and foot
    • C) Head, shell, and gills
    • D) Foot, mantle, and digestive tract
      Answer: B) Head, mantle, and foot
  • Which of the following types of gastropods are known for their lack of a shell?
    • A) Snails
    • B) Slugs
    • C) Conchs
    • D) Scallops
      Answer: B) Slugs
  • The internal shell structure of a cuttlefish is known as:
    • A) Cuttlebone
    • B) Radula
    • C) Operculum
    • D) Mantle
      Answer: A) Cuttlebone
  • Which of the following is an adaptation for protection in many gastropods?
    • A) Camouflage
    • B) Shell
    • C) Toxic secretions
    • D) All of the above
      Answer: D) All of the above
  • What structure in gastropods is responsible for producing mucus to aid in movement?
    • A) Mantle
    • B) Foot
    • C) Radula
    • D) Gills
      Answer: B) Foot
  • Which of the following is a method by which some gastropods can escape predation?
    • A) Fast swimming
    • B) Burrowing
    • C) Releasing toxins
    • D) All of the above
      Answer: C) Releasing toxins
  • What feature is unique to the class Gastropoda compared to other mollusks?
    • A) Possession of a shell
    • B) Torsion
    • C) Use of siphons
    • D) Presence of gills
      Answer: B) Torsion
  • Which gastropod is known for its ability to survive in extreme environments, including intertidal zones?
    • A) Sea slug
    • B) Limpet
    • C) Cowrie
    • D) Conch
      Answer: B) Limpet
  • What is the primary predator of many gastropods?
    • A) Fish
    • B) Crustaceans
    • C) Birds
    • D) All of the above
      Answer: D) All of the above
  • The term “herbivorous” in the context of gastropods means they primarily feed on:
    • A) Other animals
    • B) Plants
    • C) Fungi
    • D) Detritus
      Answer: B) Plants
  • Gastropods are known to have what type of circulatory system?
    • A) Open circulatory system
    • B) Closed circulatory system
    • C) No circulatory system
    • D) Simple diffusion
      Answer: A) Open circulatory system
  • What type of gas exchange occurs in aquatic gastropods?
    • A) Through skin
    • B) Gills
    • C) Lungs
    • D) Siphons
      Answer: B) Gills
  • Which of the following adaptations allows some gastropods to thrive in dry environments?
    • A) Ability to burrow
    • B) Shell structure
    • C) Mucus production
    • D) All of the above
      Answer: D) All of the above
  • The eye structures of gastropods can vary significantly; some have:
    • A) Compound eyes
    • B) Simple eyes
    • C) No eyes
    • D) All of the above
      Answer: D) All of the above
  • The main purpose of the gastropod’s shell is to:
    • A) Assist in locomotion
    • B) Provide buoyancy
    • C) Protect against predators and environmental hazards
    • D) Aid in reproduction
      Answer: C) Protect against predators and environmental hazards

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