Nematoda: Phylum Quiz
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Questions and Answers

What is a characteristic feature of nematodes?

  • Lack of distinct alimentary canal
  • Possession of a syncytial epidermis (correct)
  • Absence of sexually dimorphic traits
  • Presence of circulatory and respiratory system

    • Where can free-living nematodes be found?

  • Only in marine environments
  • Exclusively in sediments of land biomes
  • In marine, freshwater environments, and soils of land biomes (correct)
  • Primarily in host organisms

    • How do nematodes reproduce?

  • Sexually with external fertilization
  • Through spore formation
  • Sexually with internal fertilization (correct)
  • Asexually through binary fission

    • What distinguishes parasitic nematodes from free-living nematodes?

    <p>Inhabitation of host organisms (D)</p> Signup and view all the answers

    What is a distinguishing feature of the phylum Nematoda?

    <p>Molting of the cuticle (A)</p> Signup and view all the answers

    What is the function of the cuticle in nematodes?

    <p>To maintain body shape and enable movement (A)</p> Signup and view all the answers

    Which of the following is responsible for secreting the cuticle in nematodes?

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

    In nematodes, what allows them to increase in size during different stages of development?

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

    Which order of nematodes is particularly common in soil?

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

    How many orders of nematodes regularly occur in soil?

    <p>10 (A)</p> Signup and view all the answers

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