Parasitic Worms Lifecycle

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Questions and Answers

What is a characteristic of A-Dioecious organisms?

  • They have male and female reproductive organs in separate individuals (correct)
  • They have both male and female reproductive organs in the same individual
  • They have only male reproductive organs
  • They have only female reproductive organs

What type of reproduction involves the fusion of male and female gametes?

  • Vegetative reproduction
  • Sexual reproduction (correct)
  • Asexual reproduction
  • Artificial reproduction

What is another term for sexual reproduction?

  • Strategies of genetic reproduction
  • A-Dioecious reproduction
  • Strategies of sexual reproduction (correct)
  • Asexual reproduction

What is the term for the reproductive strategy in which male and female reproductive organs are found in separate individuals?

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

What is a characteristic of A-Dioecious organisms that is different from other reproductive strategies?

<p>They have male and female reproductive organs in separate individuals (D)</p> Signup and view all the answers

What is the basis for the definitive classification of parasitic worms?

<p>External and internal morphology of egg, larval, and adult stages (C)</p> Signup and view all the answers

What is the characteristic of the life cycle of parasitic worms?

<p>Complex and involving multiple stages (B)</p> Signup and view all the answers

Which stage of the parasitic worm's life cycle is harbored by the intermediate host?

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

What is the role of the definitive host in the life cycle of parasitic worms?

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

What type of parasitic worms are being referred to in the passage?

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

What is the result of the female worm producing microfilariae after mating?

<p>The parasite's life cycle is repeated. (D)</p> Signup and view all the answers

What is the name of the parasite that causes inflammation in the skin?

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

What happens to the microfilariae produced by the female worm?

<p>They migrate to the bloodstream. (C)</p> Signup and view all the answers

What is the outcome of a mosquito bite from an infected mosquito?

<p>The human host is infected with the parasite. (A)</p> Signup and view all the answers

What is the name of the disease caused by the Loa loa parasite?

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

What type of bodies do roundworms have?

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

How can roundworms be easily distinguished from other parasitic worms?

<p>By their smooth and cylindrical bodies (B)</p> Signup and view all the answers

What is true about the size of roundworms?

<p>They differ greatly in size (A)</p> Signup and view all the answers

Which feature is NOT a characteristic of roundworms?

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

What type of digestive tract do roundworms have?

<p>Complete with oral, gut, and anal openings (C)</p> Signup and view all the answers

Into which two main categories are nematodes classified?

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

Which immune system biomarkers are elevated due to nematode invasion?

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

Where are nematodes commonly found?

<p>In fresh water, the sea, and the soil (D)</p> Signup and view all the answers

Which description is true about nematode bodies?

<p>They have a smooth body lacking both endo and exoskeleton. (A)</p> Signup and view all the answers

In nematodes, what is the space between organs filled with?

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

What is true about the digestive system of nematodes, if present?

<p>It is incomplete. (B)</p> Signup and view all the answers

What is typically true about the sexes of nematodes?

<p>They are united (hermaphrodite) with very few exceptions. (D)</p> Signup and view all the answers

Which nematode is the largest of the intestinal nematodes and a common human parasite?

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

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