Quiz  /  NEET MCQ on Sycon

  • 1. 
    The best description of the group of animals to which Sycon belongs is

  • acellular or unicellular
  • multicellular possessing tissue organization where the body cavity is absent
  • multicellular with a gastrovascular system
  • multicellular without any tissue organization

  • 2. 
    If a sponge is chopped into small pieces, this happens

  • some of the pieces forms organs
  • every piece forms a sponge
  • this will differentiate
  • it dies

  • 3. 
    The spicules of silica are found in

  • Grantia
  • Leucosolenia
  • Sycon
  • Hyalonema

  • 4. 
    This about sponges is true

  • large stomach
  • chitinous spicules
  • one mouth, many exits in the body
  • many mouth openings and one exit chitinous spicule

  • 5. 
    These sponges are found in rivers

  • Sycon
  • Spongilla
  • Cliona
  • Hyalonema

  • 6. 
    In sponges, this chamber is common to all the types of canal systems

  • radial chamber
  • incurrent canal
  • excurrent canal
  • paragastric cavity

  • 7. 
    Amphiblastula is the larva of __________

  • Planaria
  • Sycon
  • Leucosolenia
  • Hydra

  • 8. 
    The primitive multicellular entities, sponges have

  • Tissue grade of organization possessing organs and organ systems
  • Cellular grade of organizations with absence of organs and organ systems
  • Both of these
  • None of these

  • 9. 
    This is the excretory waste of Sycon

  • urea
  • uric acid
  • ammonia
  • none of these

  • 10. 
    In Sycon, the epithelial lining is made of

  • Choanocytes
  • Amoebocytes
  • Both and
  • Pinacocytes/flat cells
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