Phoronis MCQs

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  • What is the primary habitat of Phoronis species?
    A) Freshwater
    B) Terrestrial
    C) Marine
    D) Arboreal
    C) Marine
  • Phoronis organisms are primarily known for their:
    A) Shells
    B) Tentacles
    C) Exoskeletons
    D) Wings
    B) Tentacles
  • What type of organism is Phoronis?
    A) Mollusk
    B) Annelid
    C) Echinoderm
    D) Brachiopod
    B) Annelid
  • Phoronis are typically found in which part of the ocean?
    A) Deep sea
    B) Intertidal zone
    C) Coastal waters
    D) Open ocean
    C) Coastal waters
  • The body of Phoronis is divided into which two main regions?
    A) Anterior and posterior
    B) Dorsal and ventral
    C) Head and trunk
    D) Oral and aboral
    A) Anterior and posterior
  • Which structure do Phoronis use for feeding?
    A) Gills
    B) Radula
    C) Tentacles
    D) Fins
    C) Tentacles
  • Phoronis are known to live in:
    A) Sand
    B) Coral reefs
    C) Rock crevices
    D) All of the above
    D) All of the above
  • What type of reproduction do Phoronis primarily exhibit?
    A) Asexual reproduction
    B) Sexual reproduction
    C) Budding
    D) Fragmentation
    B) Sexual reproduction
  • Phoronis larvae are known as:
    A) Trochophore larvae
    B) Veliger larvae
    C) Planula larvae
    D) Nauplius larvae
    A) Trochophore larvae
  • The main component of the Phoronis tube is:
    A) Calcium carbonate
    B) Chitin
    C) Silica
    D) Cellulose
    B) Chitin
  • Phoronis species can be found at what depths?
    A) Only shallow waters
    B) Only deep sea
    C) Various depths
    D) Freshwater only
    C) Various depths
  • Which of the following is a characteristic feature of Phoronis?
    A) Jointed appendages
    B) Segmented body
    C) Soft-bodied
    D) Hard shell
    C) Soft-bodied
  • What type of feeding strategy do Phoronis exhibit?
    A) Filter feeding
    B) Predation
    C) Parasitism
    D) Herbivory
    A) Filter feeding
  • The primary ecological role of Phoronis is:
    A) Predator
    B) Herbivore
    C) Decomposer
    D) Filter feeder
    D) Filter feeder
  • Which of the following is true about Phoronis?
    A) They have a complex circulatory system.
    B) They are exclusively freshwater organisms.
    C) They are sessile organisms.
    D) They possess a hard external shell.
    C) They are sessile organisms.
  • The tentacles of Phoronis are primarily used for:
    A) Locomotion
    B) Feeding
    C) Reproduction
    D) Defense
    B) Feeding
  • Phoronis belongs to which phylum?
    A) Mollusca
    B) Annelida
    C) Echinodermata
    D) Brachiopoda
    B) Annelida
  • The tubes made by Phoronis provide:
    A) Habitat for other species
    B) Structural support
    C) Protection from predators
    D) All of the above
    D) All of the above
  • Phoronis species are generally:
    A) Large and visible
    B) Small and often overlooked
    C) Colorful
    D) Fast swimmers
    B) Small and often overlooked
  • Phoronis has which type of symmetry?
    A) Bilateral symmetry
    B) Radial symmetry
    C) Asymmetry
    D) None of the above
    A) Bilateral symmetry
  • Phoronis can reproduce through which of the following methods?
    A) Budding
    B) Fission
    C) Gametes release
    D) All of the above
    C) Gametes release
  • Phoronis feed primarily on:
    A) Plankton
    B) Larger fish
    C) Algae
    D) Detritus
    A) Plankton
  • The Phoronis body is covered by a:
    A) Calcareous shell
    B) Soft cuticle
    C) Chitinous tube
    D) Hard exoskeleton
    C) Chitinous tube
  • Phoronis is an important part of the marine ecosystem because it:
    A) Competes with fish
    B) Contributes to sediment formation
    C) Provides food for large predators
    D) Detracts from biodiversity
    B) Contributes to sediment formation
  • Phoronis is closely related to which group of animals?
    A) Mollusks
    B) Annelids
    C) Arthropods
    D) Echinoderms
    B) Annelids
  • Which of the following statements is true regarding Phoronis?
    A) They can swim actively in water.
    B) They lack a defined head.
    C) They have a complex nervous system.
    D) They can survive out of water for long periods.
    B) They lack a defined head.
  • The feeding structure of Phoronis is called a:
    A) Lophophore
    B) Siphon
    C) Mantle
    D) Tentacle
    A) Lophophore
  • Phoronis is known to inhabit:
    A) Tropical waters
    B) Arctic waters
    C) Both tropical and temperate waters
    D) Only deep-sea environments
    C) Both tropical and temperate waters
  • What is the main threat to Phoronis populations?
    A) Pollution
    B) Overfishing
    C) Habitat destruction
    D) All of the above
    D) All of the above
  • The Phoronis tube is primarily made from:
    A) Sand
    B) Organic matter
    C) Chitin
    D) Calcium carbonate
    C) Chitin

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