Protists: Single-Celled Eukaryotes Quiz
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Questions and Answers

Which of the following statements about protists is true?

  • Protists are not photosynthetic in the presence of sunlight.
  • Protists have a well-defined nucleus and other membrane-bound organelles. (correct)
  • Protists cannot reproduce sexually.
  • Protists are primarily terrestrial organisms.

    • Which characteristic is common to chrysophytes and golden algae (desmids)?

  • Both form fruiting bodies bearing spores at their tips.
  • Both are microscopic and float passively in water currents. (correct)
  • Both are heterotrophic organisms.
  • Both are primarily terrestrial organisms.

    • Which statement is true about slime moulds?

  • The body moves along decaying twigs and leaves engulfing organic material. (correct)
  • They are primarily photosynthetic organisms.
  • They are saprophytic protists.
  • They have two flagella, a short and a long one.

    • What is a common characteristic of diatoms and golden algae (desmids)?

    <p>Both are photosynthetic.</p> Signup and view all the answers

    What is a distinguishing feature of Euglena among protists?

    <p>Euglena has two flagella, a short and a long one.</p> Signup and view all the answers

    Which of the following statements applies to protozoans?

    <p>They include single-celled eukaryotes.</p> Signup and view all the answers

    What is diatomaceous earth primarily used for?

    <p>Polishing and filtration</p> Signup and view all the answers

    Which group of protozoans is known to cause red tides and release toxins that kill marine animals?

    <p>Flagellated protozoans</p> Signup and view all the answers

    What is the primary feature of Euglenoids?

    <p>A protein-rich layer called pellicle</p> Signup and view all the answers

    What is the primary habitat of protozoans known as amoeboid protozoans?

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

    Which kingdom of organisms is characterized by a unique kingdom of heterotrophic organisms with a protein-rich layer instead of a cell wall?

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

    What is the main function of the cilia in ciliated protozoans?

    <p>Filtering water</p> Signup and view all the answers

    Which type of fungi is mainly responsible for causing diseases in plants and animals?

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

    What is the primary characteristic pigment present in dinoflagellates that determines their color?

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

    What is the primary function of the cavity (gullet) in ciliated protozoans?

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

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