Elimination of Nitrogenous Wastes in Animals
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Questions and Answers

Which of the following substances are excreted by animals as nitrogenous wastes?

  • Ammonia, urea, and uric acid (correct)
  • Proteins and carbohydrates
  • Glucose and lipids
  • Oxygen and carbon dioxide

    • Which form of nitrogenous waste is the most toxic?

  • Urea
  • Carbon dioxide
  • Uric acid
  • Ammonia (correct)

    • How is ammonia primarily excreted by fish?

  • Through their digestive system
  • Through their urinary system
  • Through their skin
  • Through their gills (correct)

    • Which animals mainly excrete urea as their nitrogenous waste?

    <p>Mammals, terrestrial amphibians, and marine fishes</p> Signup and view all the answers

    Where is urea converted from ammonia in ureotelic animals?

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

    Which animals excrete nitrogenous wastes as uric acid?

    <p>Reptiles, birds, land snails, and insects</p> Signup and view all the answers

    What is the advantage of excreting uric acid for uricotelic animals?

    <p>It requires less water</p> Signup and view all the answers

    Which animals are ammonotelic in nature?

    <p>Bony fishes</p> Signup and view all the answers

    What is the process of excreting ammonia called?

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

    Which animals have kidneys that play a significant role in the removal of ammonia?

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

    Which organisms have flame cells as their excretory structures?

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

    What is the function of protonephridia?

    <p>Ionic and fluid volume regulation</p> Signup and view all the answers

    Which organisms have nephridia as their excretory structures?

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

    What is the function of malpighian tubules?

    <p>Removal of nitrogenous wastes</p> Signup and view all the answers

    Which organisms have antennal glands as their excretory structures?

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

    What are the excretory structures in vertebrates called?

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

    Which organisms have complex tubular organs called kidneys?

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

    What is the function of nephridia?

    <p>Removal of nitrogenous wastes</p> Signup and view all the answers

    What are the excretory structures in insects called?

    <p>Malpighian tubules</p> Signup and view all the answers

    What is the function of antennal glands?

    <p>Removal of nitrogenous wastes</p> Signup and view all the answers

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