Animal Classification and Body Plans Quiz
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Questions and Answers

What type of symmetry divides the body into two equal halves?

  • Spherical symmetry
  • Radial symmetry
  • Bilateral symmetry (correct)
  • Lateral symmetry
  • Which evolutionary event is associated with the development of a mouth first in organisms like insects and mollusks?

  • Cambrian Explosion
  • Ediacaran Period
  • Protostome (correct)
  • Deuterostome
  • What is the key feature that distinguishes a coelomate animal?

  • Presence of mesoderm (correct)
  • Having bilateral symmetry
  • Development of a digestive tract
  • Absence of endoderm
  • Which type of animals have an anus that develops first during embryonic development?

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

    What do animals with backbones represent in terms of animal diversity?

    <p>Less than 4% of animal diversity</p> Signup and view all the answers

    'Eukaryotes, multi-cellular heterotrophs with cells lacking cell walls' describes which group of organisms?

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

    Which invertebrate class is known for being predators that are extremely smart and have sophisticated senses?

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

    What is the defining feature of Arthropods that makes them the most prolific group on the planet?

    <p>Possessing an exoskeleton and appendages</p> Signup and view all the answers

    Which invertebrate class is characterized by having a shell divided into two by a hinge and being filter feeders?

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

    Which characteristic is common to all Myriapoda species?

    <p>Having a cephalothorax + abdomen</p> Signup and view all the answers

    What is the primary reason why Arachnids are classified separately from other arthropods?

    <p>Possessing a cephalothorax + abdomen body structure</p> Signup and view all the answers

    What characteristic differentiates insects from other arthropods?

    <p>Going through metamorphosis</p> Signup and view all the answers

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