Animal Classification: Mollusks and Echinoderms
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Questions and Answers

What is the most distinctive feature of echinoderms?

  • Endoskeleton of calcareous ossicles (correct)
  • Closed circulatory system
  • Presence of a calcareous shell
  • Complete digestive system

    • Which phylum includes animals with an organ-system level of organization?

  • Echinodermata (correct)
  • Annelida
  • Porifera
  • Arthropoda

    • What type of symmetry do adult echinoderms exhibit?

  • Bilateral symmetry
  • Spherical symmetry
  • Asymmetry
  • Radial symmetry (correct)

    • Which phylum is characterized by having a water vascular system for locomotion and food transport?

    <p>Echinodermata</p> Signup and view all the answers

    What is the characteristic excretory system feature of echinoderms?

    <p>Absence of excretory system</p> Signup and view all the answers

    Which of the following phyla is known for its members having an endoskeleton of calcareous ossicles?

    <p>Echinodermata</p> Signup and view all the answers

    Which phylum in the animal kingdom has a radial coelomate level of organisation?

    <p>Echinodermata</p> Signup and view all the answers

    What is a characteristic feature of Mollusca's organ-system level of organisation?

    <p>Complete organ system</p> Signup and view all the answers

    Which phylum typically exhibits an exoskeleton of a shell?

    <p>Mollusca</p> Signup and view all the answers

    In which phylum is the presence of water vascular system and radial symmetry a common feature?

    <p>Echinodermata</p> Signup and view all the answers

    Which phylum in the animal kingdom is worm-shaped with proboscis, collar, and trunk?

    <p>Annelida</p> Signup and view all the answers

    Which phylum typically possesses an endoskeleton made of calcareous ossicles?

    <p>Echinodermata</p> Signup and view all the answers

    What type of animals possess a soft body surrounded by an external calcareous shell?

    <p>Molluscs</p> Signup and view all the answers

    Which group of animals possess an endoskeleton made of calcareous ossicles?

    <p>Echinoderms</p> Signup and view all the answers

    In which animals is the presence of a water vascular system a distinctive feature?

    <p>Echinoderms</p> Signup and view all the answers

    Which phylum exhibits organ-system level of organisation?

    <p>Molluscs</p> Signup and view all the answers

    Which group of animals has an external skeleton made of chitin?

    <p>Arthropods</p> Signup and view all the answers

    What is a characteristic feature of Mollusca regarding their body covering?

    <p>External calcareous shell</p> Signup and view all the answers

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