Ancylostoma Duodenale Lifecycle Quiz
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Questions and Answers

What is the process through which hookworm larvae enter the host?

  • By inhalation
  • Oral ingestion
  • Penetrating unbroken skin (correct)
  • Through the nose
  • How many times do hookworm larvae moult before becoming infective?

  • Three times
  • Two times (correct)
  • Four times
  • One time
  • Which animals can be infected by Ancylostoma duodenale, aside from humans?

  • Birds and reptiles
  • Cats and dogs (correct)
  • Cows and sheep
  • Fish and amphibians
  • Where does a gravid female pinworm lay her eggs?

    <p>Around the anus</p> Signup and view all the answers

    How does the pinworm life cycle begin?

    <p>With ingestion of eggs</p> Signup and view all the answers

    Under what conditions do hookworm larvae hatch in 1 to 2 days?

    <p>Moisture, warmth, and shade</p> Signup and view all the answers

    Where do adult female pinworms deposit eggs?

    <p>On the skin of the perianal area</p> Signup and view all the answers

    How long can eggs of pinworms survive in the perianal regions?

    <p>3 weeks</p> Signup and view all the answers

    Where do male and female pinworms usually mate?

    <p>In the ileum</p> Signup and view all the answers

    How many times do pinworm larvae molt before becoming adults?

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

    Which part of the body do gravid female pinworms migrate outside of during the night?

    <p>Skin of the perianal area</p> Signup and view all the answers

    What is the average lifespan of adult male pinworms?

    <p>5 to 7 weeks</p> Signup and view all the answers

    What type of circulatory system do cephalopods have?

    <p>Closed circulatory system</p> Signup and view all the answers

    How many pairs of main nerve cords do molluscs typically have?

    <p>Two pairs</p> Signup and view all the answers

    What do all molluscs have in common in terms of sensory capabilities?

    <p>Capabilities to detect chemicals, vibrations, and touch</p> Signup and view all the answers

    How do some molluscs reproduce?

    <p>Using internal fertilization as hermaphrodites</p> Signup and view all the answers

    What feature distinguishes Class Monoplacophora within Phylum Mollusca?

    <p>Distinct pseudometamerism of repeated organs</p> Signup and view all the answers

    How do snails reproduce compared to marine snails like the apple snail?

    <p>Marine snails reproduce internally while land snails reproduce externally</p> Signup and view all the answers

    What is the English name for the mollusc known as 'chiton'?

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

    Where do chitons primarily live?

    <p>Intertidal and subtidal zones</p> Signup and view all the answers

    How many nephridia do chitons typically have?

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

    What is the meaning of 'Polyplacophora' in Greek?

    <p>Many tablets bearing</p> Signup and view all the answers

    How do chitons protect themselves?

    <p>By having a dorsal shell composed of eight separate shell plates</p> Signup and view all the answers

    Which class of molluscs includes chitons?

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

    What is the main organ used for respiration in most molluscs?

    <p>Pallial lung</p> Signup and view all the answers

    How do molluscs with radula use it in feeding?

    <p>To scrape bacteria and algae off rocks</p> Signup and view all the answers

    What organ in molluscs collects fluids from the coelom for excretion?

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

    Which of the following is true about the circulatory system of most molluscs?

    <p>Blood is released into tissue spaces</p> Signup and view all the answers

    What is the function of labial palps in bivalves' feeding process?

    <p>Collect detritus from mucus</p> Signup and view all the answers

    What type of symmetry do molluscs exhibit?

    <p>Bilateral symmetry</p> Signup and view all the answers

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