Trematode Life Cycle
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Questions and Answers

What is the characteristic of all Trematode species in terms of their development?

  • They develop in two living organisms (correct)
  • They develop in three living organisms
  • They develop in a single living organism
  • They develop in a non-living organism

What is the usual fate of the eggs liberated by the definitive host?

  • They pass to water (correct)
  • They are excreted into the air
  • They are stored in the definitive host's body
  • They are consumed by the intermediate host

What is the name of the ciliated embryo that develops from the egg?

  • Metacercaria
  • Cercaria
  • Miracidium (correct)
  • Larval stage

What is the role of the second intermediate host in the life cycle of some flukes?

<p>It is required for the transformation of cercaria into metacercaria (D)</p> Signup and view all the answers

What is the final habitat of the adult worms?

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

What is the fate of the cercariae that enter the second intermediate host?

<p>They transform into metacercaria (B)</p> Signup and view all the answers

What is the function of the neck in the adult cestode?

<p>The growth zone for proglottids (D)</p> Signup and view all the answers

What is the characteristic of mature proglottids?

<p>They are hermaphrodite and have both male and female reproductive organs (D)</p> Signup and view all the answers

Why do cestodes lack a gastrointestinal tract?

<p>Because they absorb already digested nutrients (B)</p> Signup and view all the answers

What is the function of the scolex in the adult cestode?

<p>To attach to the host (C)</p> Signup and view all the answers

What is the characteristic of gravid proglottids?

<p>They contain a uterus filled with fertilized eggs (C)</p> Signup and view all the answers

What is a characteristic shared by all tapeworms?

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

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