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

How does the pinworm life cycle begin?

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

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

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

Where do adult female pinworms deposit eggs?

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

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

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

Where do male and female pinworms usually mate?

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

How many times do pinworm larvae molt before becoming adults?

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

What is the average lifespan of adult male pinworms?

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

What type of circulatory system do cephalopods have?

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

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

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

How do some molluscs reproduce?

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

What feature distinguishes Class Monoplacophora within Phylum Mollusca?

<p>Distinct pseudometamerism of repeated organs (D)</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 (B)</p> Signup and view all the answers

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

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

Where do chitons primarily live?

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

How many nephridia do chitons typically have?

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

What is the meaning of 'Polyplacophora' in Greek?

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

How do chitons protect themselves?

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

Which class of molluscs includes chitons?

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

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

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

How do molluscs with radula use it in feeding?

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

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

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

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

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

What type of symmetry do molluscs exhibit?

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

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