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 (C)</p> Signup and view all the answers

What is the distinguishing characteristic of Class Pauropoda?

<p>Small soft-bodied animals (D)</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 (A)</p> Signup and view all the answers

Which phylum is known for its velvet or walking worms?

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

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

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

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

<p>Phylum Tardigrada (B)</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 (A)</p> Signup and view all the answers

Which phylum is associated with separate sexes and internal fertilization?

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

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

<p>Phylum Hexapoda (C)</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 (B)</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 (B)</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 (A)</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 (D)</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 (D)</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 (D)</p> Signup and view all the answers

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