Arthropod Body Segments and Appendages Quiz
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Questions and Answers

What is the distinctive feature of Class Chilopoda?

  • Four pairs of head appendages
  • Two pairs of legs per segment (correct)
  • Live in leaf mold
  • Long antennae
  • How is gas exchange accomplished in Myriapoda?

  • Through skin
  • Through spiracles and tracheae (correct)
  • Through gills
  • Through book lungs
  • What is the main characteristic of Class Diplopoda?

  • Poison claws
  • Round body in cross-section (correct)
  • Live in soil and leaf mold
  • One pair of legs per segment
  • Which arthropod group has the body divided into head, thorax, and abdomen?

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

    What is the distinguishing characteristic of Class Pauropoda?

    <p>Small soft-bodied animals</p> Signup and view all the answers

    How do centipedes differ from millipedes in terms of leg segments?

    <p>One pair of legs per segment</p> Signup and view all the answers

    Which phylum is known for its velvet or walking worms?

    <p>Phylum Onychophora</p> Signup and view all the answers

    In which phylum do the species predominantly feed on small invertebrates?

    <p>Phylum Onychophora</p> Signup and view all the answers

    Which phylum can enter a period of suspended animation called cryptobiosis?

    <p>Phylum Tardigrada</p> Signup and view all the answers

    Which phylum has fossils dated at 425 million years old, indicating they were some of the earliest terrestrial animals to evolve?

    <p>Phylum Myriapoda</p> Signup and view all the answers

    Which phylum is associated with separate sexes and internal fertilization?

    <p>Phylum Onychophora</p> Signup and view all the answers

    Which phylum was the third arthropod group to invade terrestrial habitats?

    <p>Phylum Hexapoda</p> Signup and view all the answers

    Which order of arthropods is characterized by having a broadly joined prosoma and opisthosoma, long and slender legs, and external and internal digestion?

    <p>Order Opiliones</p> Signup and view all the answers

    Which order of arthropods includes species known as 'follicle mites' and can be found living on the skin of mammals, including humans?

    <p>Order Acarina</p> Signup and view all the answers

    Which order of arthropods is known for its large size, reaching up to 3 cm in length, and is an ectoparasite in all life stages, with females laying eggs after engorging with blood?

    <p>Order Acarina 2</p> Signup and view all the answers

    Which phylum is considered the closest relatives of arthropods and is part of the clade Panarthropoda?

    <p>Phylum Onychophora</p> Signup and view all the answers

    Which order of arthropods includes species that practice external and internal digestion, have a broadly joined prosoma and opisthosoma, and feed on cnidarian polyps?

    <p>Order Pycnogonida</p> Signup and view all the answers

    Which order of arthropods is known to have many pest species and can be found as ectoparasites on mammals, including humans?

    <p>Order Acarina</p> Signup and view all the answers

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